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SpaceX's "Christmas tree" is a Raptor engine for the holidays
SpaceX CEO Elon Musk showed off a holiday-themed Raptor engine “Christmas tree” with its very own star on top. Musk noted via a tweet that the company’s Starship propulsion team is “making great progress” building, testing, and refining the Raptor engines that will one day propel the next-generation rocket to Earth orbit and beyond.
On December 13th, Musk revealed that SpaceX is preparing to ship the 17th completed Raptor engine to the company’s McGregor, Texas rocket test and development facilities, the site of several dedicated test stands for the Starship engine. Likely one of the most complex rocket engines ever designed, built, or tested, Raptor relies on an exotic combustion cycle, referring to the specifics of how engines turn their propellant into meaningful thrust.
Raptor uses what is known as full-flow staged combustion (FFSC) and is the first FFSC engine to graduate beyond ground testing and actually fly, thus far having completed two flight tests in July and August 2019 as part of SpaceX’s Starhopper test campaign. In simple terms, the FFSC cycle aims to extract as much energy from a rocket’s propellant as efficiently as possible, resulting in what is theoretically the most efficient possible chemical propulsion from a given fuel and oxidizer combination.
Due to the sheer complexity required to achieve full-flow staged combustion, the engine type is incredibly rare and only two other (once) functional examples exist – one developed by Soviet engineers in the 20th century and the other built, tested, and inexplicably scrapped by NASA in the 2000s. In fact, the Soviet RD-270 engine’s thrust-to-weight ratio is likely second only to SpaceX’s own Merlin 1D engine, an absolutely spectacular achievement for a propulsion bureau operating in the late 1960s.
RD-270 had major development challenges and would likely have taken years of additional hardware-rich (i.e. destructive trial and error) testing to produce an engine actually capable of reliable flight. Before the program was cancelled in 1970, 22 engines were tested and no single RD-270 survived to perform a fourth static fire, a testament to the immense challenge of FFSC engines.
SpaceX appears to have had a much better go of it with Raptor, although many, many engines have definitely been destroyed or irreparably damaged since the full-scale engine’s February 2019 static fire debut. SpaceX CEO Elon Musk says that the 17th completed Raptor engine is almost ready to head to McGregor, Texas to kick off development and acceptance testing.
It remains to be seen when exactly Raptor engines will be mature and reliable enough to perform the 3-10 minute burns needed to send a Starship to orbit, let alone the Moon or Mars, but Musk appears confident that SpaceX is making great progress along those lines.
Per photos and info posted by NASASpaceflight.com earlier today, Raptor engine SN15 is already installed on a recently-reactivated McGregor test stand ahead of its first rocket-related test in almost half a decade.
Formerly used to test Falcon 9 first stages before SpaceX built a new stand for Falcon 9 and Heavy, that tripod stand has been reactivated for the sole purpose of supporting vertical Raptor engine static fire testing, which Musk says will simplify and expedite development by making test conditions much more flight-like. As of now, all subscale and full-scale Raptor engine static fire testing has been performed at horizontal test stands in McGregor, apparently resulting in wear and behavior that would not likely appear if engines were tested vertically.
SpaceX has gone through the same process with its Merlin engine programs, beginning with horizontal testing (far easier and simpler) but ultimately building a number of dedicated vertical test bays to ensure that engine acceptance and development tests can be performed under more flight-like conditions.
According to NASASpaceflight, SpaceX may have already fired up Raptor SN15 on its reactivated tripod test stand earlier this week, kicking off Raptor’s first Starhopper-free vertical static fire testing. It’s now unclear where the twin horizontal Raptor test bays will fit into future engine testing given Musk’s comments. More importantly, every completed Starship and Super Heavy rocket will require several dozen new Raptor engines and every one of those engines will likely need to pass acceptance testing (including static fires) in McGregor before they can be installed on a launch vehicle.
SpaceX’s Falcon 9 rocket already requires 10 engines per new booster and upper stage, a test burden SpaceX has only managed with the help of two Merlin 1D stands and one Merlin Vacuum stand, all vertical. In other words, it’s safe to say that the reactivated tripod stand is likely just the first of several vertical Raptor test stands to come.
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Tesla flexes its most impressive and longest Full Self-Driving demo yet
Tesla is flexing a lengthy Full Self-Driving demo from San Francisco to Los Angeles.
Tesla its most impressive and longest demo of the Full Self-Driving suite, showing a zero-intervention trek from the San Francisco Bay Area to Los Angeles. The drive required no interventions from the vehicle operator, the video showed.
It also included a quick Supercharging stop about two-thirds of the way in.
Tesla has been extremely confident in the performance of the FSD suite since releasing it years ago. However, with improvements in data comprehension and storage with its neural nets, as well as a more refined Hardware system, FSD has made significant strides over the last year.
I took a Tesla Model Y weekend-long Demo Drive – Here’s what I learned
Tesla’s prowess with driving tech has established the company as one of the industry leaders.
In a new video released on Tuesday, Tesla showed a drive of roughly 360 miles from San Francisco to Los Angeles, a trek of about six-and-a-half hours, with zero interventions using Full Self-Driving:
7 hour road trips aren’t so bad when your Tesla does all the driving pic.twitter.com/tIrmhDAbRf
— Tesla (@Tesla) August 12, 2025
Full Self-Driving is not fully autonomous, but it does operate under what Tesla calls “Supervised” conditions. This means that the driver does not have to have their hands on the wheel, nor do they have to control the accelerator or brake.
Instead, Tesla’s internal cabin-facing camera tracks eye movement to ensure the driver is ready to take over at any time and is paying attention.
The version of FSD used in this example is likely the version that the public has access to; the only differentiating factor would be the Hardware version, as older vehicles do not have HW4.
With Tesla’s Robotaxi suite in Austin operating since late June, the company stated that those vehicles are using a version that is not yet available to the public. It does not require anyone to be in the driver’s seat, which is how the vehicles are able to operate without anyone in the driver’s seat.
Elon Musk
Elon Musk’s new $29B Tesla stock award gets strange synopsis from governance firm
Did CGI not realize that Tesla Shareholders supported Musk being paid not once, but twice?
Elon Musk was recently awarded around $29 billion in Tesla stock as the company’s Board of Directors is attempting to get its CEO paid after his original pay package was denied twice by the Delaware Chancery Court.
But a new and strange synopsis from the Corporate Governance Institute (CGI) says the award is potentially a strength move to “endorse the will of a powerful CEO.” The problem is, in the same sentence, the firm said the new award brings up a “question of whether the board exists to steward a company in the interests of all stakeholders.”
The problem with their new analysis of Musk’s pay package is that shareholders voted twice on Musk’s original pay package of $56 billion. They voted to give Musk that sum on two separate occasions.
Musk’s original $56 billion pay package was approved by shareholders twice; once in 2018 and once again last year. Last year’s vote was in response to Delaware Chancery Court Kathaleen McCormick’s decision to revoke the “unfathomable sum” from Musk.
Shareholders still showed support for Musk getting paid. Tesla said in its new award to the CEO that this is a way to give him compensation for the first time in seven years.
CGI said in its note (via TipRanks):
“When a board builds its strategy around a single individual, it creates a concentration risk, not just operationally, but culturally and ethically. If that individual becomes a source of volatility, the company becomes fragile by design.”
What’s strange with this type of narrative is the fact that Tesla’s valuation has skyrocketed with Musk at the helm. Go back to 2020, and the stock is up over 200 percent. Since Musk’s $56 billion pay package was introduced in 2018, shares are up well over 1,000 percent.
Tesla engineer explains why Elon Musk deserves new pay package
Musk’s 2018 pay package was also not awarded to him without performance-based incentives. He was required to reach certain growth goals, all of which were accomplished through the launch of new vehicles and the advancements of its driver-assistance suites, like Autopilot and Full Self-Driving.
It is tough to agree with CGI’s perception of Musk’s new pay plan, especially as it is much less than what shareholders voted on twice. Musk deserves to be paid for his contributions to Tesla.
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Tesla Robotaxi is headed to New York City, but one thing is in its way
Tesla is working to hire Vehicle Operators in New York City, but the company still needs some regulatory hurdles to go through.
Tesla Robotaxi will be headed to New York City, but there is one huge thing that stands in its way: approval to test autonomous vehicles.
Tesla is expanding its Robotaxi platform across the United States as it currently operates in Austin, Texas, and the Bay Area of California.
The company has also been seeking approvals in several other states, including Nevada, Arizona, and Florida.
However, the company is also working to expand to major metropolitan areas across the U.S. that it has not explicitly mentioned, as it attempts to reach CEO Elon Musk’s goal of giving half of the country’s population access to the platform by the end of the year:
🚨Tesla plans to offer driverless Robotaxi rides to half the U.S. population by the end of the year, Musk says https://t.co/xEDoTF6fIt
— TESLARATI (@Teslarati) July 23, 2025
It appears New York City is next on the list, according to a job posting on Tesla’s Careers website.
The company says it is hiring a Vehicle Operator for Autopilot in Flushing, New York, a section of the borough of Queens. Queens is connected to Brooklyn and Long Island, so it seems more ideal than launching in Manhattan or the Bronx, where traffic is heavy and charging is not as readily available.
Tesla’s job posting states:
“We are looking for a highly motivated self-starter to join our vehicle data collection team. As a Prototype Vehicle Operator, you will be responsible for driving an engineering vehicle for extended periods, conducting dynamic audio and camera data collection for testing and training purposes. Access to the data collected is limited to the applicable development team. This role requires a high level of flexibility, strong attention to detail, excellent driving skills, and the ability to thrive in a fast-paced, dynamic environment.”
It also lists the hours of operation as Tuesday through Saturday or Sunday through Thursday, with its three shifts listed as:
- Day Shift: 6:00 AM – 2:30 PM or 8:00 AM – 4:30 PM
- Afternoon Shift: 2:00 PM – 10:30 PM or 4:00 PM – 12:30 AM
- Night Shift: 10:00 PM-6:30 AM or 12:00 AM-8:30 AM
We wouldn’t count on New York City being the next place Tesla launches Robotaxi. According to a report from CNBC, a spokesperson for the NYC Department of Transportation confirmed Tesla has not yet applied for permits that are needed to operate its ride-hailing service.
For what it’s worth, it could just be the first step in Tesla’s plans. It also has Vehicle Operator job postings in other regions. Houston, Texas, as well as Tampa, Miami, and Clermont, Florida, are all listed on Tesla’s Career postings.
Tesla flexes its most impressive and longest Full Self-Driving demo yet
Elon Musk’s new $29B Tesla stock award gets strange synopsis from governance firm
Tesla Robotaxi is headed to New York City, but one thing is in its way
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