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SpaceX’s thin-skinned Starship ‘test tank’ passes first trial

Elon Musk says that SpaceX's first 3mm-thick Starship test tank passed its first major trial. (LabPadre)

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CEO Elon Musk says that a new thin-skinned Starship ‘test tank’ just passed its first trial, taking advantage of delays to Starship SN9’s planned high-altitude launch debut.

Delayed by a lack of FAA approval for unknown reasons, Starship SN9’s 12.5-kilometer (7.8 mi) launch debut (virtually identical to SN8’s 12.5 km launch last month) is in limbo pending an “FAA review” according to Musk. SpaceX thus found itself with at least 24 hours of guaranteed inactivity for Starship SN9, time the company rapidly chose to fill with crane transportation and, more importantly, the first Starship ‘test tank’ stress test in months.

Known as Starship SN7.2, SpaceX’s latest ‘test tank’ is the third to carry the SN7 moniker and appears to have been built primarily to test refinements to the rocket’s structural design. Following test tanks SN7.0 and SN7.1, both used to qualify the use of a new steel alloy on an otherwise unchanged design, SN7.2 – likely built out of the same alloy – is instead focused on determining if SpaceX can begin trimming the margins of an increasingly mature technology.

Starship test tank SN7.0 and SN7.1. (NASASpaceflight – bocachicagal)
SN7.2. (NASASpaceflight – bocachicagal)

Curiously, SN7.2 is a sort of fusion of its predecessors: combining the stout stature of SN7.0 with SN7.1’s use of an aft thrust dome, but without SN7.1’s Starship-style skirt (the three rings at its bottom). Welded directly to its black test stand, it’s unclear why SpaceX chose to give SN7.2 a thrust dome, given that the thrust of Raptor engines can only be simulated with hydraulic rams if the tank is installed on one of two Starship launch mounts.

Regardless, whether SpaceX actually tests that aspect of SN7.2, the tank’s most important task is determining if future Starships (and perhaps Super Heavy boosters) can be built out of thinner, lighter steel rings. Its domes appear to be identical to past ships but writing on the exterior of the tank strongly implied that its three rings were built out of 3mm steel rather than the 4mm sheets that have made up every Starship built in the last 12 months.

SpaceX began loading the thin-skinned tank with liquid nitrogen (used to simulate cryogenic propellant without the risk of an explosion) around 9am CST and spent around three hours performing an “initial pressure test.” It’s unclear what that test entailed but it most likely involved raising the tank’s internal pressure to levels achieved by SN7.0 and SN7.1 Musk has previously said that that 6 bar was the bare minimum necessary for orbital flight, translating to 7.5-8.5 bar to achieve an industry-standard safety margin of 25-40%.

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That SN7.2 survived that initial pressure test bodes well for the significant mass reductions SpaceX will need to optimize Starships for efficient orbital flight, potentially shaving 5-10 metric tons off the dry mass of future ships. For orbital rocket stages, every single kilogram of mass reduction translates to an extra kilogram of cargo capacity, whereas boost stages (i.e. Super Heavy) offer far more lenient ratios on the order to 10:1, meaning that adding 5-10 kilograms of rocket hardware reduces maximum payload capacity by just ~1 kg.

Depending on when SpaceX is allowed to launch Starship SN9, the company’s next test could involve pressurizing SN7.2 until it bursts, determining if the tank’s thinner skin substantially impacts its performance as a pressure vessel.

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 cleared in Canada EV rebate investigation

Tesla has been cleared in an investigation into the company’s staggering number of EV rebate claims in Canada in January.

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Credit: Tesla

Canadian officials have cleared Tesla following an investigation into a large number of claims submitted to the country’s electric vehicle (EV) rebates earlier this year.

Transport Canada has ruled that there was no evidence of fraud after Tesla submitted 8,653 EV rebate claims for the country’s Incentives for Zero-Emission Vehicles (iZEV) program, as detailed in a report on Friday from The Globe and Mail. Despite the huge number of claims, Canadian authorities have found that the figure represented vehicles that had been delivered prior to the submission deadline for the program.

According to Transport Minister Chrystia Freeland, the claims “were determined to legitimately represent cars sold before January 12,” which was the final day for OEMs to submit these claims before the government suspended the program.

Upon initial reporting of the Tesla claims submitted in January, it was estimated that they were valued at around $43 million. In March, Freeland and Transport Canada opened the investigation into Tesla, noting that they would be freezing the rebate payments until the claims were found to be valid.

READ MORE ON ELECTRIC VEHICLES: EVs getting cleaner more quickly than expected in Europe: study

Huw Williams, Canadian Automobile Dealers Association Public Affairs Director, accepted the results of the investigation, while also questioning how Tesla knew to submit the claims that weekend, just before the program ran out.

“I think there’s a larger question as to how Tesla knew to run those through on that weekend,” Williams said. “It doesn’t appear to me that we have an investigation into any communication between Transport Canada and Tesla, between officials who may have shared information inappropriately.”

Tesla sales have been down in Canada for the first half of this year, amidst turmoil between the country and the Trump administration’s tariffs. Although Elon Musk has since stepped back from his role with the administration, a number of companies and officials in Canada were calling for a boycott of Tesla’s vehicles earlier this year, due in part to his association with Trump.

Tesla excluded from incentives in Canada over Trump tariffs

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Tesla Semis to get 18 new Megachargers at this PepsiCo plant

PepsiCo is set to add more Tesla Semi Megachargers, this time at a facility in North Carolina.

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Credit: Tesla

Tesla partner PepsiCo is set to build new Semi charging stations at one of its manufacturing sites, as revealed in new permitting plans shared this week.

On Friday, Tesla charging station scout MarcoRP shared plans on X for 18 Semi Megacharging stalls at PepsiCo’s facility in Charlotte, North Carolina, coming as the latest update plans for the company’s increasingly electrified fleet. The stalls are set to be built side by side, along with three Tesla Megapack grid-scale battery systems.

The plans also note the faster charging speeds for the chargers, which can charge the Class 8 Semi at speeds of up to 1MW. Tesla says that the speed can charge the Semi back to roughly 70 percent in around 30 minutes.

You can see the site plans for the PepsiCo North Carolina Megacharger below.

Credit: PepsiCo (via MarcoRPi1 on X)

Credit: PepsiCo (via MarcoRPi1 on X)

READ MORE ON THE TESLA SEMI: Tesla to build Semi Megacharger station in Southern California

PepsiCo’s Tesla Semi fleet, other Megachargers, and initial tests and deliveries

PepsiCo was the first external customer to take delivery of Tesla’s Semis back in 2023, starting with just an initial order of 15. Since then, the company has continued to expand the fleet, recently taking delivery of an additional 50 units in California. The PepsiCo fleet was up to around 86 units as of last year, according to statements from Semi Senior Manager Dan Priestley.

Additionally, the company has similar Megachargers at its facilities in Modesto, Sacramento, and Fresno, California, and Tesla also submitted plans for approval to build 12 new Megacharging stalls in Los Angeles County.

Over the past couple of years, Tesla has also been delivering the electric Class 8 units to a number of other companies for pilot programs, and Priestley shared some results from PepsiCo’s initial Semi tests last year. Notably, the executive spoke with a handful of PepsiCo workers who said they really liked the Semi and wouldn’t plan on going back to diesel trucks.

The company is also nearing completion of a higher-volume Semi plant at its Gigafactory in Nevada, which is expected to eventually have an annual production capacity of 50,000 Semi units.

Tesla executive teases plan to further electrify supply chain

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Tesla sales soar in Norway with new Model Y leading the charge

Tesla recorded a 54% year-over-year jump in new vehicle registrations in June.

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Credit: Tesla

Tesla is seeing strong momentum in Norway, with sales of the new Model Y helping the company maintain dominance in one of the world’s most electric vehicle-friendly markets.

Model Y upgrades and consumer preferences

According to the Norwegian Road Federation (OFV), Tesla recorded a 54% year-over-year jump in new vehicle registrations in June. The Model Y led the charge, posting a 115% increase compared to the same period last year. Tesla Norway’s growth was even more notable in May, with sales surging a whopping 213%, as noted in a CNBC report.

Christina Bu, secretary general of the Norwegian EV Association (NEVA), stated that Tesla’s strong market performance was partly due to the updated Model Y, which is really just a good car, period.

“I think it just has to do with the fact that they deliver a car which has quite a lot of value for money and is what Norwegians need. What Norwegians need, a large luggage space, all wheel drive, and a tow hitch, high ground clearance as well. In addition, quite good digital solutions which people have gotten used to, and also a charging network,” she said.

Tesla in Europe

Tesla’s success in Norway is supported by long-standing government incentives for EV adoption, including exemptions from VAT, road toll discounts, and access to bus lanes. Public and home charging infrastructure is also widely available, making the EV ownership experience in the country very convenient.

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Tesla’s performance in Europe is still a mixed bag, with markets like Germany and France still seeing declines in recent months. In areas such as Norway, Spain, and Portugal, however, Tesla’s new car registrations are rising. Spain’s sales rose 61% and Portugal’s sales rose 7% last month. This suggests that regional demand may be stabilizing or rebounding in pockets of Europe.

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