News
SpaceX’s odd Starbase propellant storage tank prototype passes first test
Likely to the relief of many, SpaceX appears to have successfully tested a prototype of the custom-built Starbase propellant storage tanks that will eventually hold thousands of tons of fuel and oxidizer.
For reasons unknown, SpaceX’s built its first ground support equipment (GSE) ‘test tank’ – a subscale prototype designed to quickly verify basic production quality and design goals – months after it began mass-producing operational storage tanks. In fact, of the seven total GSE tanks expected to be built, SpaceX has already completed seven, installed five, and scrapped one. Known as GSE4, SpaceX actually used modified parts of that scrapped tank to assemble the GSE test tank that first rolled to Starbase’s launch (and test) facilities on August 23rd.
Two days later, SpaceX subjected the small tank to its first test.
Given that SpaceX appears to have almost retroactively assembled the GSE4 test tank after building the final products, the results from its testing were always going to be significantly more anxiety-inducing than any of the more than half-dozen other tanks the company has tested in the last year and a half. Having already fabricated, assembled, or even installed six of seven planned GSE tanks, the discovery of major issues during testing could potentially cause months of delays by forcing SpaceX to perform lengthy repairs or even fully scrap all six existing tanks and start over.
Thankfully, at least for the time being, it appears that SpaceX can write off those potential worst-case scenarios. On August 25th, SpaceX took advantage of a test window initially believed to be for Starship S20 and put the cobbled-together GSE4 tank through its paces for the first time. As with previous test tanks, all SpaceX can really do is fill the prototype with liquid nitrogen (LN2), a non-flammable alternative to liquid oxygen or methane propellant that is approximately as cold and heavy. As a storage tank prototype, though, GSE4 has no need for hydraulic ram setups used to simulate the thrust of Raptor engines on several previous prototypes.
As such, one or several cryogenic proof tests were all that were ever really in GSE4’s future. On GSE4’s first test, SpaceX performed a more or less normal cryogenic proof, completely filling the tank with LN2, closing its vents, and then allowing the natural process of LN2 boiloff to raise the tank to the desired test pressure. However, unlike other test tanks, GSE4 never actually appeared to reopen its main vents. In fact, SpaceX may have never actually drained liquid nitrogen from the test tank, instead simply letting it slowly warm up and boil off into gas that was seemingly managed and vented by ground systems instead of the tank itself.
As a result, GSE4 stayed frosty (indicating a significant amount of remaining liquid nitrogen) for more than eight hours, strongly implying that it was either very slowly drained or simply allowed to warm up naturally. Given that large cryogenic storage tanks really don’t have to be significantly pressurized to complete their job, it’s possible that GSE4’s first test was primarily meant to verify the basic structural integrity of a tank that’s slightly different than those on Starship and, more importantly, test a different method of pressure and fluid management where most of that work is done by external, permanent systems on the ground.
That’s exactly what one might expect of rocket tankage slightly modified to serve as ground storage tanks. SpaceX’s GSE tanks never have to act as self-contained units and can instead rely almost entirely on separate systems.
Aside from verifying that that slightly different method of tank operations works as expected, GSE4’s first test likely also allowed SpaceX to better characterize the thermal properties of the thin steel skin and domes that are Starship and GSE tanks. Unlike GSE4, operational GSE tanks will be enclosed inside 12m (~40 ft) wide ‘cryo shells’ designed to insulate their cryogenic contents, but the insulative properties of the inner tanks (or the lack there of, rather) will still determine how well that insulation works and how much is actually needed to reach the desired boiloff rates. A contractor hired by SpaceX has already completed all seven cryo shells, so any results gathered from GSE4 will obviously be more of a check than a developmental test, but data is still data.
News
Elon Musk reveals big plans for Tesla Optimus at the Supercharger Diner
Will Optimus deliver my Tesla Club on roller skates? I’m hopeful.
Elon Musk revealed on X on Wednesday that Tesla Optimus will soon be getting a job at the Supercharger Diner in Los Angeles, and its role will be right on par with what we believed the humanoid bot would be perfect for.
While Optimus was spotted serving popcorn at the Diner on Monday as it opened for the first time, that’s its only job, at least for now. Musk said Optimus will be getting a promotion in 2026, and it will be a food runner, bringing your order straight to your car, eliminating the need to go inside yourself.
It will complete what Tesla hopes is a full-fledged 50s diner experience, curated by the imagination of the future. In the 1950s, drive-in diners were a common hangout to grab a bite and watch a movie. Tesla opened its Supercharger Diner in Los Angeles earlier this week, but it has a futuristic twist to it.
You can order food directly from your car, sync your center touchscreen and speakers to the two massive projection screens that Tesla is playing movie scenes on at the Diner, and even go inside for a true break from your car.
Next year, Tesla will take it a step further, Musk confirmed:
Optimus will bring the food to your car next year pic.twitter.com/opPGjOe7t1
— Elon Musk (@elonmusk) July 23, 2025
The Diner features 80 Superchargers that can be used by both Tesla and non-Tesla EVs, provided that the manufacturer of the electric car has access to the company’s robust network. It is also available to non-EV owners, as they can park their cars and stop in for a quick bite to eat.
Tesla’s full menu at the Diner is available here, and its focus for the restaurant was to provide healthier options by sourcing most of its food from local, organic, and humane farms:
We put a lot of effort into using truly organic ingredients from farms that we have visited
— Elon Musk (@elonmusk) July 22, 2025
Optimus’s capabilities seem to be progressing to a point where Tesla feels confident that the humanoid robot can handle carrying food and delivering it to customers at their cars. Whether it will be put on roller skates is another question, but we’re hopeful Optimus can do it when it gets its promotion next year.
Investor's Corner
Tesla Q2 2025 earnings: What Wall Street expects
The company has faced mounting pressure this year, with TSLA stock down 19% year-to-date.
Tesla (NASDAQ:TSLA) is set to release its second-quarter 2025 financial results after markets close on Wednesday, July 23. The company has faced mounting pressure this year, with TSLA stock down about 19% year-to-date.
What Wall Street expects
As noted in a TipRanks report, Wall Street has remained cautious about the electric vehicle maker due to concerns about the EV segment in general, competition, reduced margins, federal EV regulations, and CEO Elon Musk’s political activities.
Overall, Wall Street expects Tesla to post earnings per share of $0.39, down 25% from a year ago. Tesla’s revenue is forecasted to fall 13% to $22.19 billion, and analysts also expect the electric vehicle maker to post lower margins this quarter.
Analyst expectations
Tesla delivered approximately 384,120 vehicles in Q2, a 13.5% drop year-over-year, as per Main Street Data. The company also produced over 410,000 vehicles and deployed 9.6 GWh of energy storage products during the quarter.
Ahead of the earnings call, Cantor Fitzgerald analyst Andres Sheppard reiterated a Buy rating and a $335 per share price target. He also adjusted his Q2 revenue forecast to $21 billion, down from his previous estimate of $24.1 billion. Despite short-term softness, Sheppard maintained his 2025 and 2026 projections, citing confidence in Tesla’s high-margin Robotaxi business model.
Barclays analyst Dan Levy kept a Hold rating with a $275 price target. He stated that the company faces “increasingly weaker fundamentals,” but he also suggested that Tesla’s Robotaxi story could drive optimism. Levy expects modest gross margin improvement quarter-over-quarter and flagged the full-year EPS estimate drop from $3.20 to $1.84. Delays in launching the affordable Tesla model remain a downside risk, Levy noted.
News
Tesla expands FSD Transfer offer to Europe and the Middle East
Tesla’s FSD transfer offer has long been used as a quarterly sales lever in North America.
Tesla has extended its Full Self-Driving (FSD) transfer promotion beyond North America, opening the door for owners in Europe and the Middle East to carry over their existing FSD systems to a new vehicle.
The move comes days after Elon Musk acknowledged a user’s request for FSD transfers in Europe on X, which the CEO called a “fair” ask. Tesla Europe later confirmed the offer via its official X account.
FSD transfers reaching new markets
FSD transfers have been used as a quarterly sales lever in North America, with its most recent availability in April 2025, as noted in a Not a Tesla App report. While this incentive had remained exclusive to the U.S. and Canada, Tesla’s latest announcement marks the first time the program has been rolled out internationally.
Interestingly enough, the offer hasn’t yet been extended to other FSD-enabled regions like China. This suggests that Tesla may be prioritizing markets where regulatory approval for FSD remains pending. European Tesla owners, after all, have been waiting literal years for FSD to be rolled out into their countries.
How the program works
The process for FSD transfers is straightforward. Existing Tesla owners with FSD must place a new vehicle order and complete delivery during the active promotion period. During checkout, customers are instructed not to add FSD to the new car. Instead, they must notify a Tesla advisor of their intent to transfer their existing vehicle’s FSD.
On delivery day, FSD will be deactivated on the old vehicle and activated on the new one. Customers are not required to trade in or sell their original Tesla that had FSD, though once the license is moved, the old vehicle reverts to just Basic Autopilot features.
Elon Musk reveals big plans for Tesla Optimus at the Supercharger Diner
Tesla Q2 2025 earnings: What Wall Street expects
Tesla expands FSD Transfer offer to Europe and the Middle East
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