

News
Elon Musk says SpaceX making good progress on Starship’s upgraded Raptor 2 engines
As is routine, SpaceX CEO Elon Musk has taken to Twitter to offer a few details about the status of Starship, its Raptor engines, and a few upgrades planned for both.
In mid-December, Musk revealed even more ambitious plans to upgrade Starship by stretching its propellant tanks and adding another three Raptor engines, potentially boosting the ship’s maximum thrust by 50% and substantially improving payload performance. These latest details are focused on an upgraded version of the Raptor engine and on additional changes to Starship’s structural design and assembly process.
According to Musk, as SpaceX continues to ramp up ground testing of the upgraded engine variant, “Raptor 2 now operates routinely at 300 bar main chamber pressure.” For context, on February 10th, 2019, just days after SpaceX began testing the first full-scale Raptor prototype ever completed, the engine briefly reached a main combustion chamber pressure just shy of 269 bar (3900 psi). That narrowly beat records set by Russia’s RD-270 and RD-180 engines, the latter of which is used on ULA’s Atlas V.
It took 18 months before Musk revealed clear proof that at least one Raptor prototype sustained such high chamber pressures over a minute or more of steady-state operations. The same engine peaked at an impressive 330 bar (~4800 psi), briefly producing 225 tons (~500,000 lb) of thrust and soundly beating out Russia’s never flown RD-701 engine, which crested 290-300 bar in testing. Another ~18 months after that milestone, Raptor isn’t quite operational in the sense of supporting orbital-class launches but the engine isn’t far from its first and has since supported dozens of Starship static fires and seven flight tests – five of which occurred in a period of just six months.
Already, despite the fact that Raptor 1 or 1.5 engines have yet to even attempt an orbital-class launch, SpaceX has almost entirely moved on to a new and improved variant known as Raptor 2. According to Musk, all Raptor ground testing at the company’s McGregor, Texas development campus is now focused on the new hardware, which reportedly features much cleaner plumbing and wiring. The biggest change to Raptor 2, though, is an almost 25% increase in maximum nominal thrust over Raptor 1/1.5 – from around 185 to 230 tons (408,000-507,000 lbf). That’s partially enabled by widening the ‘throat’ of Raptor’s nozzle, which sacrifices a small amount of efficiency for more power density. However, Raptor 2 also contains design improvements throughout to enable sustained, reliable operation at chamber pressures up to 300 bar – 10% higher than Raptor 1.5.
On October 24th, Musk subtly live-tweeted one of the first Raptor 2 static fires, revealing that the engine reached a chamber pressure of 321 bar (~4650 psi) and briefly produced around 245 tons (~540,000 lbf) of thrust before destroying itself. Now, a little over two months later, Musk says that Raptor 2 prototypes are routinely operating at 300 bar without major issues, meaning that they can ignite and safely shut down after burning for several minutes at those pressures. In theory, given that 300 bar is Raptor 2’s targeted chamber pressure at max thrust, that means that the engine is now “routinely” operating at the level SpaceX wants and needs to take Starship to the next level.
It’s likely that one or several months of work remain before SpaceX can begin qualifying the first Raptor 2 engines (or, more importantly, hypothetical Raptor 2 Vacuum or Boost variants) for the first Starship or Super Heavy prototypes designed for the new engine. Nonetheless, the rapid progress SpaceX has made in the first few months of Raptor 2 testing is extremely encouraging.
Investor's Corner
Tesla Board member and Airbnb co-founder loads up on TSLA ahead of robotaxi launch
Tesla CEO Elon Musk gave a nod of appreciation for the Tesla Board member’s purchase.

Tesla Board member and Airbnb Co-Founder Joe Gebbia has loaded up on TSLA stock (NASDAQ:TSLA). The Board member’s purchase comes just over a month before Tesla is expected to launch an initial robotaxi service in Austin, Texas.
Tesla CEO Elon Musk gave a nod of appreciation for the Tesla Board member in a post on social media.
The TSLA Purchase
As could be seen in a Form 4 submitted to the United States Securities and Exchange Commission (SEC) on Monday, Gebbia purchased about $1.02 million worth of TSLA stock. This was comprised of 4,000 TSLA shares at an average price of $256.308 per share.
Interestingly enough, Gebbia’s purchase represents the first time an insider has purchased TSLA stock in about five years. CEO Elon Musk, in response to a post on social media platform X about the Tesla Board member’s TSLA purchase, gave a nod of appreciation for Gebbia. “Joe rocks,” Musk wrote in his post on X.
Gebbia has served on Tesla’s Board as an independent director since 2022, and he is also a known friend of Elon Musk. He even joined the Trump Administration’s Department of Government Efficiency (DOGE) to help the government optimize its processes.

Just a Few Weeks Before Robotaxi
The timing of Gebbia’s TSLA stock purchase is quite interesting as the company is expected to launch a dedicated roboatxi service this June in Austin. A recent report from Insider, citing sources reportedly familiar with the matter, claimed that Tesla currently has 300 test operators driving robotaxis around Austin city streets. The publication’s sources also noted that Tesla has an internal deadline of June 1 for the robotaxi service’s rollout, but even a launch near the end of the month would be impressive.
During the Q1 2025 earnings call, Elon Musk explained that the robotaxi service that would be launched in June will feature autonomous rides in Model Y units. He also noted that the robotaxi service would see an expansion to other cities by the end of 2025. “The Teslas that will be fully autonomous in June in Austin are probably Model Ys. So, that is currently on track to be able to do paid rides fully autonomously in Austin in June and then to be in many other cities in the US by the end of this year,” Musk stated.
News
Stellantis unveils solid-state battery for EVs
Stellantis validated solid state battery cells for EVs: ultra-dense, fast-charging, and AI-optimized. Launching demo fleet by 2026.

Stellantis N.V. and Factorial Energy have validated Factorial’s automotive-sized FEST® solid-state battery cells, a major milestone for next-generation electric vehicle (EV) batteries. The breakthrough positions Stellantis and Factorial to advance EV performance with lighter, more efficient batteries.
“Reaching this level of performance reflects the strengths of our collaboration with Factorial.
“This breakthrough puts us at the forefront of the solid-state revolution, but we are not stopping there. We continue working together to push the boundaries and deliver even more advanced solutions, bringing us closer to lighter, more efficient batteries that reduce costs for our customers,” said Ned Curic, Stellanti’s Chief Engineering and Technology Officer.
The 77Ah FEST® cells achieved an energy density of 375Wh/kg, supporting over 600 cycles toward automotive qualification. Unlike lithium-ion batteries, these solid-state cells charge from 15% to over 90% in 18 minutes at room temperature and deliver high power with discharge rates up to 4C. Factorial’s AI-driven electrolyte formulation enables performance in temperatures from -30°C to 45°C (-22°F to 113°F), overcoming previous solid-state limitations.
“Battery development is about compromise. While optimizing one feature is simple, balancing high energy density, cycle life, fast charging, and safety in an automotive-sized battery with OEM validation is a breakthrough,” said Siyu Huang, CEO of Factorial Energy. “This achievement with Stellantis is bringing next-generation battery technology from research to reality.”
The collaboration optimizes battery pack design for reduced weight and improved efficiency, enhancing vehicle range and affordability. Stellantis invested $75 million in Factorial in 2021 and plans to integrate these batteries into a demonstration fleet by 2026. This fleet will validate the technology’s real-world performance, a critical step toward commercialization.
The milestone aligns with Stellantis’ push for sustainable EV solutions, leveraging Factorial’s disruptive technology to meet the rising demand for high-performance batteries. As the companies refine pack architecture, the validated cells promise faster charging and greater efficiency, potentially reshaping the EV market. With the demonstration fleet on the horizon, Stellantis and Factorial are poised to lead the solid-state battery push, delivering cost-effective, high-range EVs to consumers.
News
Tesla China vehicle registrations rise 51% in April’s fourth week
In the week ending April 27, Tesla China saw 10,300 new vehicle registrations.

Tesla China’s new vehicle registrations saw a notable rise in the week of April 21-27, 2025. Over the week, the electric vehicle maker’s registrations saw an impressive 51% week-over-week rise, suggesting that domestic vehicle deliveries are on the rise once more.
Tesla China Results
In the week ending April 27, Tesla China saw 10,300 new vehicle registrations. This represents a notable rise from the company’s registration numbers in the past weeks of April. For context, Tesla China saw 3,600 registrations in the week ending April 6, 5,400 registrations in the week ending April 13, and 6,780 registrations in the week ending April 20, 2025.
Considering that April is the first month of the second quarter, expectations were high that Tesla China was allocating Giga Shanghai’s output for vehicle exports. With 10,300 registrations in the week ending April 27, however, it would appear that the company’s domestic deliveries are picking up once more.
Tesla China does not report its weekly sales figures, though a general idea of the company’s overall perforce in the domestic auto sector can be inferred through new vehicle registrations. Fortunately, these registrations are closely tracked by industry watchers, as well as some local automakers like Li Auto.
Tesla Model 3 and Model Y in Focus
Tesla China produces the Model Y and Model 3 in Giga Shanghai. Both vehicles are also exported from China to foreign territories. As per industry watchers, it would appear that both the Model 3 and Model Y saw an increase in registrations in the week ending April 27.
The Model 3, for one, appears to have seen 3,200 registrations in the week ending April 27, a 14% increase from the 2,800 that were registered in the week ending April 20. For context, Tesla China saw just 1,500 new Model 3 registrations in the week ending April 13 and 1,040 registrations in the week ending April 6.
The Model Y, on the other hand, saw 7,100 registrations in the week ending April 27. That’s a 77.5% increase from the 4,000 that were registered in the week ending April 20. Tesla also saw 3,900 registrations in the week ending April 13, and 2,540 registrations in the week ending April 6, 2025.
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