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SpaceX resurrects California Starship factory plan just one year after abandoning it
Just nine months after scrapping temporary Starship facilities built at a Los Angeles port, the company has unexpectedly reconsidered that decision, restarting talks to build a steel Starship factory in California.
In March 2018, nearly two years ago, the public first became aware of SpaceX’s plans to build a Starship factory in Port of Los Angeles. Begun while Starship was still known as BFR (Big Falcon Rocket) and designed to be built almost entirely out of carbon-fiber composites, the company’s first in-house effort to build its next-generation rocket began in an unassuming tent erected on port property around December 2017. Unintentionally foreshadowing the future of both Tesla Model 3 and SpaceX Starship production, that temporary tent was completed in just a month or two and officially began supporting BFR prototype production in April 2018.
In December 2018, CEO Elon Musk rebranded BFR as Starship and revealed that SpaceX would take the extraordinary step of redesigning the fully-reusable rocket to use stainless steel instead of carbon fiber. One year after SpaceX began building carbon fiber hardware, Musk moved quickly to make the radical move to steel permanent, literally scrapping its BFR prototype tent and abandoning its lease of a separate facility that was meant to host a more permanent composite Mars rocket factory in the near future. Now, almost exactly a year canceling its Port of LA factory, SpaceX has returned with plans to build and finish new port-based Starship production facilities just a few months from now.
Completed in September 2018, the closest SpaceX ever got to producing its 2017 BFR iteration was a large ring-like composite structure, also known as a barrel section. Measuring some 9m (30 ft) wide and 4-6m (12-20 ft) long, both 2016, 2017, and 2018 variants of SpaceX’s next-generation fully-reusable rocket would have been assembled from a number of similar components — all to be built out of carbon composites with giant mandrels (a bit like inverse molds).
While it’s more than likely that SpaceX could have managed the feat, building a reusable orbital spacecraft like Starship out of carbon fiber posed a vast array of challenges. When Musk revealed that SpaceX would move from carbon fiber to steel in December 2018, the CEO went into some detail to explain several of those challenges and why the major change was thus worth the substantial body of work it would force the company to scrap and redo from scratch.
The two biggest hurdles for BFR were quite simple. From a technical perspective, carbon fiber is dramatically less temperature-resistant than most metals (especially steel), meaning that despite it offering a much higher strength-to-weight ratio on paper, almost every inch of the spaceship and booster’s exposed surfaces would have to be insulated. For Starship, this would be exceptionally challenging given that the spacecraft must fundamentally be able to survive numerous orbital-velocity reentries with little to no refurbishment in between. While a steel Starship would still need a proper heat shield on its windward half, the other half of its steel hull could likely be almost entirely unshielded thanks to the fact that most steels remain structural sound at much higher temperatures.
Beyond the “delightfully counterintuitive” technical properties that could make a steel Starship as light or even lighter than the carbon composite alternative, Musk also noted that a huge motivator for the switch was the fact that the cutting-edge composites SpaceX would have to buy were incredibly expensive. In September 2019, Musk stated that composites would have cost some $130,000 per ton, whereas a ton of the stainless steel SpaceX is now using can be purchased for just $2500. In simpler terms, from a material cost perspective, steel Starships and Super Heavy boosters could cost an incredible 50 times less than their carbon composite twins.
Port Factory 2.0
For now, it’s unclear exactly what SpaceX foresees for Starship’s newly re-proposed Port of LA factory. The same primary constraint remains: there is still no affordable way to ship full-scale 9m-diameter Starship hardware by road. The most likely explanation for the resurrected interest in port facilities is that SpaceX still wants to keep some major aspects of Starship manufacturing within reach of California’s vast aerospace talent pool, as well as the company’s own California headquarters, situated just 20 or so miles from Port of LA.
At the same time, SpaceX probably has all the space it could possibly want at its Hawthorne, CA headquarters after a massive Triumph facility was recently vacated, meaning that any intentional expansion in Port of LA is probably motivated by the need to transport massive rocket parts from California to Texas and Florida. Daily Breeze also reports that “SpaceX would manufacture its…Starship spacecraft and…Super Heavy [booster] on the property” if it receives approval, seemingly implying interest in full-scale rocket production at its prospective port factory.
Regardless of whether SpaceX wants to build smaller Starship subcomponents (i.e. nose cones, header tanks, fins, plumbing, crew compartments, etc.) or complete spaceships and boosters, the company is seemingly far more eager to get port facilities in place, this time around. Specifically, SpaceX told a city council member that it wanted to get a Port of LA facility up and running just 90 days after it expressed new interest in the concept.
To do so, SpaceX will copy the methods used to create both Tesla’s General Assembly 4 factory addition and its own massive Starship production space in South Texas, relying on Sprung Instant Structures to erect a massive semi-permanent tent or two in an extremely short period of time. Unfortunately, because of how abruptly SpaceX abandoned its Port of LA factory lease, the company will have to repeat the permitting and environmental review process from scratch, making it very unlikely that it will be able to begin construction within the next month or two.
Regardless, SpaceX certainly remains as agile as ever. Stay tuned for updates on this surprise resurgence of plans for a Port of LA Starship factory.
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Elon Musk
Elon Musk teases crazy outlook for xAI against its competitors
Musk’s response was vintage hyperbole, designed to rally supporters and dismiss doubters, something his responses on social media often do.
Elon Musk has never been one to shy away from crazy timelines, massive expectations, and outrageous outlooks. However, his recent plans for xAI and where he believes it will end up compared to its competitors are sure to stimulate conversation.
In a bold and characteristic response on X, Elon Musk fired back at a recent analysis that positioned his AI venture, xAI, as lagging behind industry frontrunners.
The post, from March 14, came as a direct reply to forecaster Peter Wildeford’s assessment, which drew from benchmarks and reporting to rank AI developers.
xAI will catch up this year and then exceed them all by such a long distance in 3 years that you will need the James Webb telescope to see who is in second place
— Elon Musk (@elonmusk) March 14, 2026
Wildeford placed Anthropic, Google, and OpenAI in a virtual tie at the top, with xAI and Meta trailing by about seven months. Chinese players like Moonshot, Deepseek, zAI, and Alibaba were estimated to be nine months behind, while France’s Mistral lagged by about a year and a half.
Musk’s response was vintage hyperbole, designed to rally supporters and dismiss doubters, something his responses on social media often do.
He claimed xAI would “catch up this year,” meaning by the end of 2026, erasing that seven-month deficit against the leaders. But he didn’t stop there.
Musk escalated his vision to 2029, predicting xAI would “exceed them all by such a long distance” that observers would need the James Webb Space Telescope, NASA’s orbiting observatory stationed about 930,000 miles from Earth, to spot whoever lands in second place. This analogy underscores Musk’s confidence in xAI’s trajectory, implying an astronomical lead that could redefine the AI landscape.
Breaking down these claims reveals Musk’s strategic optimism. First, the short-term catch-up: xAI, launched in 2023, has already released models like Grok, but recent benchmarks, including those for Grok 4.2, have shown it falling short in capabilities compared to rivals.
Anthropic’s Claude series, Google’s Gemini, and OpenAI’s GPT models dominate in areas like reasoning, coding, and multimodal tasks. Musk’s assertion suggests aggressive scaling in compute, talent, or architecture, perhaps leveraging xAI’s ties to Tesla’s Dojo supercomputers or Musk’s vast resources, to close the gap swiftly.
The longer-term dominance by 2029 paints an even more audacious picture. Musk envisions xAI not just parity but supremacy, outpacing competitors in innovation speed and model sophistication.
This could involve breakthroughs in energy-efficient training, real-world integration, like Tesla’s robotics, or ethical AI alignment, aligning with Musk’s stated goal of “understanding the universe.”
Critics, however, point to parallels with Tesla’s Full Self-Driving delays; one reply highlighted Musk’s 2023 promise of FSD readiness. Musk has made this promise for many years, and although the system has been strong and improving, it is still a ways off from the completely autonomous operation that was expected by now.
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Musk’s comment highlights the intensifying U.S.-centric AI race, with xAI challenging the “three-way” dominance noted by Wharton professor Ethan Mollick, whom Wildeford quoted. As geopolitical tensions rise—evident in the Chinese firms’ lag—Musk’s tease could spur investment and talent wars.
Yet, it also invites scrutiny: Will xAI deliver, or is this another telescope-needed mirage? In an industry where timelines slip but stakes soar, Musk’s words keep the spotlight on xAI’s ambitious path forward.
Elon Musk
Tesla Terafab set for launch: Inside the $20B AI chip factory that will reshape the auto industry
Tesla set to launch “Terafab Project: A vertically integrated chip fabrication effort combining logic processing, memory, and advanced packaging.
Tesla is making one of the boldest bets in its history. On March 14, Elon Musk posted on X that the “Terafab Project launches in 7 days,” pointing to March 21, 2026 as the start date for what he has described as a vertically integrated chip fabrication effort combining logic processing, memory, and advanced packaging.
Tesla first confirmed Terafab on its January 28, 2026 earnings call, where Musk told investors the company needs to build a chip fabrication facility to avoid a supply constraint projected to materialize within three to four years. But the seeds were planted even earlier. At Tesla’s annual general meeting last year, Musk warned that even in the best-case scenario for chip production from their suppliers, it still wouldn’t be enough, and declared that building a “gigantic chip fab” simply had to be done.
While there has been no official announcement on where Tesla plans to break ground on the massive Terafab, all signs point to the North Campus of Giga Texas in Austin.
Months of speculation has surrounded Tesla’s North Campus expansion at Giga Texas, where drone footage captured by observer Joe Tegtmeyer revealed massive construction site preparation just north of the existing factory on a scale that rivals the original Giga Texas footprint itself.
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The project is projected to produce 100–200 billion AI and memory chips annually, targeting 100,000 wafer starts per month, at an estimated cost of $20 billion. Tesla is targeting 2-nanometre process technology and anticipated to be the most advanced node currently in commercial production. Dubbed the Tesla AI5 chip, the chip will pack 40x–50x more compute performance and 9x more memory than AI4, and will be among the first products Terafab factory is set to produce. This highly optimized, and massively powerful inference chip is designed to make full self-driving (FSD) and Tesla’s Optimus robots faster, safer, and with full autonomy.
(Credit: Tesla)
This is where Terafab becomes a genuine game-changer. If Tesla successfully builds a 2nm chip fab at scale, it becomes one of only a handful of entities that’s capable of producing AI silicon in-house, with competitive implications that extend far beyond Tesla’s own vehicles, and potentially positioning Tesla as a chip supplier or licensor to other industries.
Credit: @serobinsonjr/X
The next-gen Tesla AI chips will power advancements in Full Self-Driving software, the Cybercab Robotaxi program, and the Optimus humanoid robot line. Musk’s projections for Optimus require chip volumes that no existing external supplier can commit to on Tesla’s timeline.Competitors like Waymo and GM’s Cruise remain dependent on third-party silicon, leaving them exposed to the same supply chain vulnerabilities Tesla is now working to eliminate entirely.
The Terafab launch this week may not mean a factory opens its doors overnight, but it signals Tesla is serious about owning the entire AI stack, from software to silicon.
Elon Musk
What is Digital Optimus? The new Tesla and xAI project explained
At its core, Digital Optimus operates through a dual-process architecture inspired by human cognition.
Tesla and xAI announced their groundbreaking joint project, Digital Optimus, also nicknamed “Macrohard” in a humorous jab at Microsoft, earlier this week.
This software-based AI agent is designed to automate complex office workflows by observing and replicating human interactions with computers. As the first major outcome of Tesla’s $2 billion investment in xAI, it represents a powerful fusion of hardware efficiency and advanced reasoning.
At its core, Digital Optimus operates through a dual-process architecture inspired by human cognition.
Macrohard or Digital Optimus is a joint xAI-Tesla project, coming as part of Tesla’s investment agreement with xAI.
Grok is the master conductor/navigator with deep understanding of the world to direct digital Optimus, which is processing and actioning the past 5 secs of…
— Elon Musk (@elonmusk) March 11, 2026
Tesla’s specialized AI acts as “System 1”—the fast, instinctive executor—processing the past five seconds of real-time computer screen video along with keyboard and mouse actions to perform immediate tasks.
xAI’s Grok model serves as “System 2,” the strategic “master conductor” or navigator, providing high-level reasoning, world understanding, and directional oversight, much like an advanced turn-by-turn navigation system.
When combined, the two can create a powerful AI-based assistant that can complete everything from accounting work to HR tasks.
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The system runs primarily on Tesla’s low-cost AI4 inference chip, minimizing expensive Nvidia resources from xAI for competitive, real-time performance.
Elon Musk described it as “the only real-time smart AI system” capable, in principle, of emulating the functions of entire companies, handling everything from accounting and HR to repetitive digital operations.
Timelines point to swift deployment. Announced just days ago, Musk expects Digital Optimus to be ready for user experience within about six months, targeting rollout around September 2026.
It will integrate into all AI4-equipped Tesla vehicles, enabling parked cars to handle office work during downtime. Millions of dedicated units are also planned for deployment at Supercharger stations, tapping into roughly 7 gigawatts of available power.
Oh and it works in all AI4-equipped cars, so your car can do office work for you when not driving.
We’re also deploying millions of dedicated Digital Optimus units in the field at Superchargers where we have ~7 gigawatts of available power.
— Elon Musk (@elonmusk) March 12, 2026
Digital Optimus directly supports Tesla’s broader autonomy strategy. It leverages the same end-to-end neural networks, computer vision, and real-time decision-making tech that power Full Self-Driving (FSD) software and the physical Optimus humanoid robot.
By repurposing idle vehicle compute and extending AI4 hardware beyond driving, the project scales Tesla’s autonomy ecosystem from roads to digital workspaces.
As a virtual counterpart to physical Optimus, it divides labor: software agents manage screen-based tasks while humanoid robots tackle physical ones, accelerating Tesla’s vision of general-purpose AI for productivity, Robotaxi fleets, and beyond.
In essence, Digital Optimus bridges Tesla’s vehicle and robotics autonomy with enterprise-scale AI, promising massive efficiency gains. No other company currently matches its real-time capabilities on such accessible hardware.
It really could be one of the most crucial developments Tesla and xAI begin to integrate, as it could revolutionize how people work and travel.
Elon Musk teases crazy outlook for xAI against its competitors
Tesla Terafab set for launch: Inside the $20B AI chip factory that will reshape the auto industry
