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SpaceX’s massive Falcon Heavy rocket aims for December 29 inaugural launch

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Based on information released by NASASpaceflight.com, a highly reliable source of insider details, SpaceX’s first Falcon Heavy rocket could roll out to the LC-39A launch pad before the end of November, less than a month away. While the first roll-out (or two) will be dedicated solely to “Wet Dress Rehearsals” (WDR), this will be the first time the iconic vehicle makes it to the pad, and will be a historic event regardless of what follows.

No earlier than (NET) “late-November”, the first WDR will see Falcon Heavy go through the usual motions of propellant loading while also conducting an array of systems checks and validations to verify that things are proceeding as expected. This first test will not culminate in any sort of hot-fire, and is more intended to verify that the massive rocket is playing well with the modifications made to the launch pad and the Transporter/Erector/Launcher (TEL) that carries it from the integration facilities to the pad. If major issues come up, they will be dealt with and followed by a second identical WDR. If there are no issues with the first WDR, the second rehearsal could smoothly morph into the first static fire of the integrated vehicle.

As Chris Gebhardt of NSF discusses in some detail, the first Falcon Heavy static fire(s) conducted at LC-39A will be of groundbreaking importance, as SpaceX is currently unable to test fully-integrated Falcon Heavy vehicles at its McGregor, Texas facilities due to the rocket’s sheer power. A lot, thus, rests on these first static fires, currently scheduled to begin around December 15th.

Falcon Heavy and Dragon 2 could one day enable circumlunar space tourism. (SpaceX)

Given the distinctly experimental nature of Falcon Heavy’s inaugural launch, specific dates are best taken as general placemarkers, and the actual dates of the first flow depend entirely upon the tests that precede each subsequent step. Nevertheless, the dates provided by NASASpaceflight point to Falcon Heavy’s first static fire on December 15th, followed two weeks later by a tentative launch date of December 29th.

Staying focused on Mars: Is Falcon Heavy necessary?

Even an uncertain launch date of that specificity is still a historic event for Falcon Heavy, long lampooned and straw-manned as an example of SpaceX’s silly pie-in-the-sky claims and Elon Musk’s oversimplification of complex engineering tasks. There is a grain of truth to such contentions, but they tend to miss the point by huge margins. The actual market for mid-level heavy-lift launch vehicles like Falcon Heavy is quite simply too small to be a major motivator for a commercial launch company like SpaceX. One must remember that SpaceX was not founded to be a run-of-the-mill launch provider. The company’s goal, as has been reiterated ad infinitum, is “enabling human life on Mars”, something that has explicitly prefaced every single job posting on the company’s website for more than half a decade.

For a time, it appeared that Falcon Heavy might eventually be used to enable SpaceX’s Red Dragon program, intended to field-test the technologies needed for month-long cruises in deep space and landing large payloads on Mars. However, the program was cancelled earlier this year, in favor of what Musk called “vastly bigger ships”. Indeed, updated Mars plans unveiled on September 29th showed that SpaceX was forging ahead with an updated BFR and BFS, and hopes to fly its first missions to Mars in 2022.

SpaceX’s massive BFR, intended to create and support a human colony on Mars, is visualized taking to the sky. Experience from operating Falcon Heavy will likely benefit BFR once it eventually begins hot-fire testing. (SpaceX)

Falcon Heavy will admittedly become the most powerful operational launch vehicle when it first lifts off in approximately two months, and it will likely retain that title well into 2020, when NASA’s Space Launch System may conduct its first launch. However, regardless of the impressive technological accomplishments it will embody, Falcon Heavy simply is not powerful or affordable enough to ever realistically enable a sustained human presence on Mars. SpaceX does have a small number of customers actively waiting with payloads for Falcon Heavy – its second mission is currently penciled in for June 2018 – and it is reasonable to assume that some or all of those missions will be completed simply out of due diligence. SpaceX may also be motivated to continue the Falcon Heavy program as a possible entrant in a recently-announced USAF competition meant to partially fund the development of multiple US-built heavy-lift launch vehicles.

More simply still, experience derived from igniting and simultaneously operating Falcon Heavy’s 27 Merlin 1D rocket engines will to some extent benefit BFR’s development and operations, as the conceptual vehicle is currently expected to host 31 Raptor engines on its first stage.

Whether Falcon Heavy is to remain a development or production priority for SpaceX after its first several launches is unclear, but the vehicle’s inaugural launch and all subsequent launches are bound to be spectacles to behold. The company’s second Florida-based launch pad, intended to support two simultaneous landings of Falcon Heavy’s side boosters, appears to be nearly complete. At LC-39A, the facility’s TEL already sports major visible modifications necessary for it to operate with Falcon Heavy. All three of the first Heavy’s first stage cores have already completed hot-fire testings in Texas and are now located at Cape Canaveral, awaiting their first integrated tests later this month. Delays to the December 29th launch date are probable, but the various components needed for Falcon Heavy’s first launch have truly come together, and the vehicle’s launch is now simply a matter of “when”. Place your bets!

Eric Ralph is Teslarati's senior spaceflight reporter and has been covering the industry in some capacity for almost half a decade, largely spurred in 2016 by a trip to Mexico to watch Elon Musk reveal SpaceX's plans for Mars in person. Aside from spreading interest and excitement about spaceflight far and wide, his primary goal is to cover humanity's ongoing efforts to expand beyond Earth to the Moon, Mars, and elsewhere.

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Tesla brings closure to flagship ‘sentimental’ models, Musk confirms

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tesla model s model x
(Credit: Tesla)

Tesla is bringing closure to its flagship Model S and Model X vehicles, which CEO Elon Musk said several years ago were only produced for “sentimental reasons.”

The Model S and Model X have been light contributors to Tesla’s delivery growth over the past few years, commonly contributing only a few percentage points toward the over 1.7 million cars the company has handed over to customers annually since 2022.

However, the Model S and Model X have remained in production because of their high-end performance and flagship status; they are truly two vehicles that are premium offerings and do not hold major weight toward Tesla’s future goals.

On Wednesday, during the Q4 2025 Earnings Call, Musk confirmed that Tesla would bring closure to the two models, ending their production and making way for the manufacturing efforts of the Optimus robot:

“It is time to bring the Model S and Model X programs to an end with an honorable discharge. It is time to bring the S/X programs to an end. It’s part of our overall shift to an autonomous future.”

Musk said the production lines that Tesla has for the Model S and Model X at the Fremont Factory in Northern California will be transitioned to Optimus production lines that will produce one million units per year.

Tesla Fremont Factory celebrates 15 years of electric vehicle production

Tesla will continue to service Model S and Model X vehicles, but it will officially stop deliveries of the cars in Q2, as inventory will be liquidated. When they’re gone, they’re gone.

Tesla has been making moves to sunset the two vehicles for the better part of one year. Last July, it stopped taking any custom orders for vehicles in Europe, essentially pushing the idea that the program was coming to a close soon.

Musk said back in 2019:

“I mean, they’re very expensive, made in low volume. To be totally frank, we’re continuing to make them more for sentimental reasons than anything else. They’re really of minor importance to the future.”

That point is more relevant than ever as Tesla is ending the production of the cars to make way for Optimus, which will likely be Tesla’s biggest product in the coming years.

Musk added during the Earnings Call on Wednesday that he believes Optimus will be a major needle-mover of the United States’ GDP, as it will increase productivity and enable universal high income for humans.

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LIVE BLOG: Tesla (TSLA) Q4 and FY 2025 earnings call

Tesla’s (NASDAQ:TSLA) earnings call follows the release of the company’s Q4 and full-year 2025 update letter.

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Credit: Tesla Europe & Middle East/X

Tesla’s (NASDAQ:TSLA) earnings call follows the release of the company’s Q4 and full-year 2025 update letter, which was published on Tesla’s Investor Relations website after markets closed on January 28, 2025.

The results cap a quarter in which Tesla produced more than 434,000 vehicles, delivered over 418,000 vehicles, and deployed 14.2 GWh of energy storage products. For the full year, Tesla produced 1.65 million vehicles and delivered 1.63 million, while total energy storage deployments reached 46.7 GWh.

Tesla’s Q4 and FY 2025 Results

According to Tesla’s Q4 and FY 2025 Update Letter, the company posted GAAP earnings per share of $0.24 and non-GAAP EPS of $0.50 in the fourth quarter. Total revenue for Q4 came in at $24.901 billion, while GAAP net income was reported at $840 million.

For full-year 2025, Tesla reported GAAP EPS of $1.08 and non-GAAP EPS of $1.66 per share. Total revenue reached $94.83 billion, including $69.53 billion from automotive operations and $12.78 billion from the company’s energy generation and storage business. GAAP net income for the year totaled $3.79 billion.

Earnings call updates

The following are live updates from Tesla’s Q4 and FY 2025 earnings call. I will be updating this article in real time, so please keep refreshing the page to view the latest updates on this story.

16:25 CT – Good day to everyone, and welcome to another Tesla earnings call live blog. There’s a lot to unpack from Tesla’s Q4 and FY 2025 update letter, so I’m pretty sure this earnings call will be quite interesting.

16:30 CT – The Q4 and FY 2025 earnings call officially starts. IR exec Travis Axelrod opens the call. Elon and other executives are present.

16:30 CT – Elon makes his opening statement and explains why Tesla changed its mission to “Amazing Abundance.” “With the continued growth of AI and robotics, I think we’re headed towards a future of universal high income,” Musk said, adding that along the way, Tesla will still be improving its products while keeping the environment safe and healthy.

16:34 CT – Elon noted that the first steps for this future are happening this year, thanks to Tesla’s autonomy and robotics programs, which will be launching and ramping this year. He also highlighted that Tesla will be making major investments this year, though the company will be very strategic when it comes to its funding. “I think it makes a ton of strategic sense,” Musk said. 

16:36 CT – Elon also announces the end of the Model S and Model X programs “with an honorable discharge.” If you’re interested in buying a Model S or X, it’s best to do it now, Musk said. The Model S and Model X factory in Fremont will be replaced by an Optimus line. “It’s slightly sad, but it is time to bring the S and X program to an end. It’s part of our overall shift to an autonomous future,” Musk said.

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16:38 CT – Elon discusses how Unsupervised FSD is now starting for the Robotaxi service. He noted that these Unsupervised Robotaxis don’t have any chase cars as of yesterday. He reiterated Tesla’s plans for owners to be able to add their own vehicles to the Robotaxi fleet. Autonomy target for the end of the year is about a quarter or half of the United States, Musk said. 

16:41 CT – Elon noted that the Tesla Energy team is absolutely killing it. He also stated that Tesla expects its Energy business to continue growing, and that the “solar opportunity is underrated.”

16:43 CT –Elon also added that Tesla Optimus 3 will be unveiled in about three months, probably. The Model S and Model X line in Fremont will be a million-unit Optimus production line. Looks like Optimus is really coming out of the gate with large, meaningful volumes. “The normal S curve for manufacturing ramps is longer for Optimus,” Musk stated. “Long term, I think Optimus will have a significant impact on the US GDP.”

16:44 CT – Elon closes his opening statements with a sincere thanks to the Tesla team. He also noted that he feels fortunate to be able to work alongside such a talented workforce. 

Elon ends his opening remarks with an optimistic prediction about the future.“The future is more exciting than you can imagine,” he concluded.

16:47 CT – Tesla CFO Vaibhav Taneja makes his opening remarks. He discusses several aspects of Tesla’s Q4 milestones. He noted that Tesla Energy achieved yet another gross profit record during the fourth quarter. There’s insane demand for the Megapack and Powerwall. Backlogs for these products are healthy this 2026. He also noted that Tesla ended 2025 with a bigger vehicle order backlog compared to recent years.

16:53 CT – Investor questions from Say begin. The first question is about Tesla’s expectations for the Robotaxi Network. Lars Moravy noted that it has the advantage of manufacturing and scale, and Tesla believes that the Robotaxi Network will significantly grow year over year. Elon highlighted that the Cybercab will be produced with no steering wheel or pedals. No fallback. Elon also noted that Tesla expects to produce more Cybercabs than all its other vehicles combined in the future.

16:51 CT – The next question is if Tesla still expects to launch new models, such as affordable cars. Lars Moravy noted that Tesla did release affordable variants last year, and Tesla is still pushing hard to lower its costs. That being said, Tesla is really pushing the Cybercab as its total addressable market is larger than consumer-owned cars. Lars also mentioned that Tesla will produce different vehicles for its Robotaxi services.

16:56 CT – Elon noted that eventually, Tesla will produce mostly autonomous cars. The exception would be the next-generation Roadster, which will be a true driver’s car.

17:03 CT – A question about Elon’s past comments about a potential next pickup truck was asked. Lars noted that the Cybertruck is still performing well in the electric pickup truck segment, though Tesla is known for flexibility. Elon added that Tesla will be transitioning the Cybertruck line to a fully autonomous vehicle line. He also stated that the Cybertruck is a useful vehicle. “An autonomous Cybertruck will be useful for that.”

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17:10 CT – A question was asked about when FSD will be 100% Unsupervised. Elon noted that 100% Unsupervised FSD is already being used today, though only in the Austin Robotaxi program. Tesla is still being extremely careful with its rollout. 

When asked about Tesla’s chip program, Elon noted that he feels pretty good about Tesla’s chip strategy. But in terms of selling Tesla’s chips outside Tesla, the company has to make sure it has enough chips for Optimus robots, data centers, and other programs first.

17:18 CT – Analyst questions begin. First up is Wolf Research. He asks about Tesla’s increasing Capex, specifically where the majority of it is going. The Tesla CFO noted that programs in six factories are going live this year, so that consumes Capex. The Optimus program also consumes a lot of resources. The growth of Tesla’s current capacity is also consuming a lot of resources. As for how these programs will be funded, the CFO pointed to Tesla’s massive war chest, as well as initiatives such as the Robotaxi Network.

17:21 CT – Morgan Stanley asks about Tesla’s xAI investment. The analyst asked about more information about how Tesla and xAI will work together. The CFO noted that this investment is part of Master Plan Part IV. Elon also mentioned some advantages for xAI’s technology for Tesla’s products, like Grok being used to manage a Robotaxi fleet or a group of Optimus robots.

17:24 CT – Barclays asks Elon about the constraints on memory. Does Tesla have any near term constraints for Tesla vehicles’ memory? Elon responded that the Tesla AI computer is already very compute and memory-efficient. The intelligence per gigabyte is important. Musk noted that Tesla is ahead of the industry by an order of magnitude or more. 

17:29 CT – Cannacord asks about startups from China entering the humanoid market. What competitive advantage does Optimus have compared to these rivals? Elon stated that he believes China will be a key competitor in the humanoid robot market. China will be the toughest competitor for Tesla. That being said, Elon noted that Tesla believes Optimus will be ahead in real-world intelligence, electromechanical dexterity, and hand design.

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Tesla announces massive investment into xAI

“On January 16, 2026, Tesla entered into an agreement to invest approximately $2 billion to acquire shares of Series E Preferred Stock of xAI as part of their recent publicly-disclosed financing round,” it said.

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Tesla has announced a major development in its ventures outside of electric vehicles, as it confirmed today that it invested $2 billion into xAI on January 16.

The move is significant, as it marks the acquisition of shares of Series E Preferred Stock, executed on market terms alongside other investors. The company officially announced it in its Q4 2025 Shareholder Deck, which was released at market close on Wednesday.

The investment follows shareholder approval in 2025 for potential equity stakes in xAI and echoes SpaceX’s earlier $2 billion contribution to xAI’s $10 billion fundraising round.

CEO Elon Musk, who is behind both companies, is now weaving what appears to be an even tighter ecosystem among his ventures, blending Tesla’s hardware prowess with xAI’s cutting-edge AI models, like Grok.

Tesla confirmed the investment in a statement in its Shareholder Deck:

“On January 16, 2026, Tesla entered into an agreement to invest approximately $2 billion to acquire shares of Series E Preferred Stock of xAI as part of their recent publicly-disclosed financing round. Tesla’s investment was made on market terms consistent with those previously agreed to by other investors in the financing round. As set forth in Master Plan Part IV, Tesla is building products and services that bring AI into the physical world. Meanwhile, xAI is developing leading digital AI products and services, such as its large language model (Grok).”

It continued:

“In that context, and as part of Tesla’s broader strategy under Master Plan Part IV, Tesla and xAI also entered into a framework agreement in connection with the investment. Among other things, the framework agreement builds upon the existing relationship between Tesla and xAI by providing a framework for evaluating potential AI collaborations between the companies. Together, the investment and the related framework agreement are intended to enhance Tesla’s ability to develop and deploy AI products and services into the physical world at scale. This investment is subject to customary regulatory conditions with the expectation to close in Q1’2026.”

The history of the partnership traces back to xAI’s founding in July 2023, as Musk launched the company as a counterweight to dominant AI players like OpenAI and Google.

xAI aimed to “understand the true nature of the universe” through unbiased, truth-seeking AI. Tesla, meanwhile, has long invested in AI for its Full Self-Driving (FSD) software and Optimus robots, training models on vast datasets from its vehicle fleet.

The investment holds profound significance for both companies.

For Tesla, it accelerates its Master Plan Part IV, which envisions AI-driven autonomy in vehicles and humanoid robots. xAI’s Grok could enhance Tesla’s real-world AI applications, from optimizing battery management to predictive maintenance, potentially giving Tesla an edge over its biggest rivals, like Waymo.

Investors, on the other hand, stand to gain from this symbiosis. Tesla Shareholders may see boosted stock value through AI innovations, with analysts projecting enhanced margins and significant future growth in robotics. xAI’s valuation could soar, attracting more capital.

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