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Tesla’s matte black Semi prototype makes rare appearance in Kettleman City Supercharger

(Photo: James Douma)

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After staying under the radar for the past few months, Tesla’s matte black Semi prototype has been spotted on US roads once more. This time around, the all-electric long hauler was sighted pulling a trailer at the 40-stall Kettleman City Supercharger, located between San Francisco and Los Angeles.

The matte black Tesla Semi prototype was photographed by Tesla enthusiast James Douma, who noted that he spotted the vehicle on Wednesday afternoon. In a conversation with Teslarati, James stated that the vehicle seemed to be traveling alone, as the truck only had one person inside. Such an observation is quite interesting, considering that the silver Semi test mule traveling across the United States is usually accompanied by a team of engineers.

The Tesla enthusiast also remarked that he was informed by the staff of the Kettleman City Supercharger that it was the first time the matte black Semi prototype visited the location. The silver Semi test mule, on the other hand, has reportedly visited the site on four different occasions. The matte black Semi did not stay very long in the Kettleman site on Wednesday, though, as the vehicle promptly left the location soon after the photos were taken.

Tesla’s matte black Semi prototype makes a rare appearance at the Kettleman City Supercharger. (Photo: James Douma)

Sightings of the Tesla Semi during recent months have featured the silver test mule, which has been spotted in multiple states across the US. The matte black Semi, which also made an appearance at the vehicle’s unveiling back in November 2017, was last seen in April as it was being transported on a trailer heading east into I-80 in the Des Moines, IA area, near the headquarters of Ruan Transportation Management Systems, a reservation holder for the all-electric truck.

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Prior to that, the matte black Semi was sighted a couple of times with its silver sibling, as the vehicles transported cargo between Tesla’s Fremont factory and Gigafactory 1 in Nevada. The last sighting of the matte black truck traveling alone was back in January, when it was filmed driving down a street in Sunnyvale, CA. While the electric car maker has not provided a reason behind the vehicle’s absence during the past few months, it is nonetheless refreshing to the see sleek prototype back on the roads once more.

Tesla’s matte black Semi prototype makes a rare appearance at the Kettleman City Supercharger. (Photo: James Douma)

The Tesla Semi has the potential to be the company’s most disruptive vehicle to date. Being designed to compete in the highly-competitive trucking industry, the Semi is equipped with several features that make it a viable and preferable alternative to diesel-powered vehicles. The Semi is propelled by four Model 3-derived electric motors that provide instant torque, allowing the Semi to go from 0-60 mph in 5 seconds flat without a trailer. The vehicle was also announced with a range of either 300 miles or 500 miles per charge, though Elon Musk later noted that truck’s long-range variant would have closer to 600 miles of range per charge.

The Tesla Semi is set to be supported by a network of Megachargers, which would be capable of replenishing 400 miles of range in as little as 30 minutes of charging. Unlike the Supercharger Network, which has a power output of roughly 120 kW, speculations are high that Tesla’s Megacharger will see around ten times the power levels. As Tesla conducts road tests of the Semi, though, the company has been adopting a temporary charging solution for the vehicle, using a series of Supercharger stalls connected to a hub, which is, in turn, connected to the all-electric truck. 

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Simon is an experienced automotive reporter with a passion for electric cars and clean energy. Fascinated by the world envisioned by Elon Musk, he hopes to make it to Mars (at least as a tourist) someday. For stories or tips--or even to just say a simple hello--send a message to his email, simon@teslarati.com or his handle on X, @ResidentSponge.

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Tesla AI5 chip nears completion, Elon Musk teases 9-month development cadence

The Tesla CEO shared his recent insights in a post on social media platform X.

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Credit: Tesla

Tesla’s next-generation AI5 chip is nearly complete, and work on its successor is already underway, as per a recent update from Elon Musk. 

The Tesla CEO shared his recent insights in a post on social media platform X.

Musk details AI chip roadmap

In his post, Elon Musk stated that Tesla’s AI5 chip design is “almost done,” while AI6 has already entered early development. Musk added that Tesla plans to continue iterating rapidly, with AI7, AI8, AI9, and future generations targeting a nine-month design cycle. 

He also noted that Tesla’s in-house chips could become the highest-volume AI processors in the world. Musk framed his update as a recruiting message, encouraging engineers to join Tesla’s AI and chip development teams.

Tesla community member Herbert Ong highlighted the strategic importance of the timeline, noting that faster chip cycles enable quicker learning, faster iteration, and a compounding advantage in AI and autonomy that becomes increasingly difficult for competitors to close.

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AI5 manufacturing takes shape

Musk’s comments align with earlier reporting on AI5’s production plans. In December, it was reported that Samsung is preparing to manufacture Tesla’s AI5 chip, accelerating hiring for experienced engineers to support U.S. production and address complex foundry challenges.

Samsung is one of two suppliers selected for AI5, alongside TSMC. The companies are expected to produce different versions of the AI5 chip, with TSMC reportedly using a 3nm process and Samsung using a 2nm process.

Musk has previously stated that while different foundries translate chip designs into physical silicon in different ways, the goal is for both versions of the Tesla AI5 chip to operate identically. AI5 will succeed Tesla’s current AI4 hardware, formerly known as Hardware 4, and is expected to support the company’s Full Self-Driving system as well as other AI-driven efforts, including Optimus.

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Tesla Model Y and Model 3 named safest vehicles tested by ANCAP in 2025

According to ANCAP in a press release, the Tesla Model Y achieved the highest overall weighted score of any vehicle assessed in 2025.

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Credit: ANCAP

The Tesla Model Y recorded the highest overall safety score of any vehicle tested by ANCAP in 2025. The Tesla Model 3 also delivered strong results, reinforcing the automaker’s safety leadership in Australia and New Zealand.

According to ANCAP in a press release, the Tesla Model Y achieved the highest overall weighted score of any vehicle assessed in 2025. ANCAP’s 2025 tests evaluated vehicles across four key pillars: Adult Occupant Protection, Child Occupant Protection, Vulnerable Road User Protection, and Safety Assist technologies.

The Model Y posted consistently strong results in all four categories, distinguishing itself through a system-based safety approach that combines structural crash protection with advanced driver-assistance features such as autonomous emergency braking, lane support, and driver monitoring. 

This marked the second time the Model Y has topped ANCAP’s annual safety rankings. The Model Y’s previous version was also ANCAP’s top performer in 2022.

The Tesla Model 3 also delivered a strong performance in ANCAP’s 2025 tests, contributing to Tesla’s broader safety presence across segments. Similar to the Model Y, the Model 3 also earned impressive scores across the ANCAP’s four pillars. This made the vehicle the top performer in the Medium Car category.  

ANCAP Chief Executive Officer Carla Hoorweg stated that the results highlight a growing industry shift toward integrated safety design, with improvements in technologies such as autonomous emergency braking and lane support translating into meaningful real-world protection.

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“ANCAP’s testing continues to reinforce a clear message: the safest vehicles are those designed with safety as a system, not a checklist. The top performers this year delivered consistent results across physical crash protection, crash avoidance and vulnerable road user safety, rather than relying on strength in a single area.

“We are also seeing increasing alignment between ANCAP’s test requirements and the safety technologies that genuinely matter on Australian and New Zealand roads. Improvements in autonomous emergency braking, lane support, and driver monitoring systems are translating into more robust protection,” Hoorweg said.

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Tesla Sweden uses Megapack battery to bypass unions’ Supercharger blockade

Just before Christmas, Tesla went live with a new charging station in Arlandastad, outside Stockholm, by powering it with a Tesla Megapack battery.

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Credit: Tesla Charging/X

Tesla Sweden has successfully launched a new Supercharger station despite an ongoing blockade by Swedish unions, using on-site Megapack batteries instead of traditional grid connections. The workaround has allowed the Supercharger to operate without direct access to Sweden’s electricity network, which has been effectively frozen by labor action.

Tesla has experienced notable challenges connecting its new charging stations to Sweden’s power grid due to industrial action led by Seko, a major Swedish trade union, which has blocked all new electrical connections for new Superchargers. On paper, this made the opening of new Supercharger sites almost impossible.

Despite the blockade, Tesla has continued to bring stations online. In Malmö and Södertälje, new Supercharger locations opened after grid operators E.ON and Telge Nät activated the sites. The operators later stated that the connections had been made in error. 

More recently, however, Tesla adopted a different strategy altogether. Just before Christmas, Tesla went live with a new charging station in Arlandastad, outside Stockholm, by powering it with a Tesla Megapack battery, as noted in a Dagens Arbete (DA) report. 

Because the Supercharger station does not rely on a permanent grid connection, Tesla was able to bypass the blocked application process, as noted by Swedish car journalist and YouTuber Peter Esse. He noted that the Arlandastad Supercharger is likely dependent on nearby companies to recharge the batteries, likely through private arrangements.

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Eight new charging stalls have been launched in the Arlandastad site so far, which is a fraction of the originally planned 40 chargers for the location. Still, the fact that Tesla Sweden was able to work around the unions’ efforts once more is impressive, especially since Superchargers are used even by non-Tesla EVs.

Esse noted that Tesla’s Megapack workaround is not as easily replicated in other locations. Arlandastad is unique because neighboring operators already have access to grid power, making it possible for Tesla to source electricity indirectly. Still, Esse noted that the unions’ blockades have not affected sales as much.

“Many want Tesla to lose sales due to the union blockades. But you have to remember that sales are falling from 2024, when Tesla sold a record number of cars in Sweden. That year, the unions also had blockades against Tesla. So for Tesla as a charging operator, it is devastating. But for Tesla as a car company, it does not matter in terms of sales volumes. People charge their cars where there is an opportunity, usually at home,” Esse noted. 

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