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Tesla Semi spotted Supercharging thousands of miles from factory as real-world tests continue

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Tesla’s all-electric Semi truck continues its real-world testing, with the long-hauler recently being spotted nearly 2,000 miles away from the Fremont factory at the Catoosa, Oklahoma Supercharger station, off of Interstate 44. The electric truck’s recent sighting comes a day after the vehicle was spotted cruising in New Mexico on I-40, more than 600 miles away.

The Catoosa sighting was shared on the r/TeslaMotors subreddit by Model 3 reservation holder u/JohnFitzgeraldSnow, who was able to take a photo of the truck. The electric car enthusiast mentioned that the all-electric Semi was only using a single charging cable while it was attached to a Supercharger stall. The truck was reportedly accompanied by a group of Tesla employees as well.

Tesla Semi at a Supercharger. [Credit: JohnFitzgeraldSnow/Reddit]

The latest sightings of the Semi are yet another sign that Tesla is doing some extensive real-world testing on the electric long-hauler. Among Tesla’s vehicles, the Semi would likely be the one that would rack up miles the fastest, considering that it would be tasked to transport cargo over long distances on an everyday basis. The state of the Tesla Semi in its recent sighting is proof of this, as the vehicle was pretty much covered all over with bugs from the freeway.

The Semi is designed to disrupt the trucking industry the way the Model 3 is designed to disrupt the mainstream auto market. The specs of the Semi, particularly its 500-mile range, have caught the ire of the company’s critics. Daimler’s head of trucks Martin Daum even alleged that the Semi’s quoted specs defy the laws of physics. This was laughed off by Elon Musk during the Q1 2018 earnings call, when he stated that Tesla could make a truck with 500 miles of range even with its current battery technology.

Being the largest vehicle in Tesla’s lineup, the Semi is designed to be supported by a network of high-powered Megachargers. Elon Musk noted during the Semi’s unveiling last November that the Megachargers would be capable of replenishing 400 miles of range in as little as 30 minutes of charging. The actual specs of the Megacharger have not been announced as of date, but there is a good chance that it would be roughly ten times as powerful as Tesla’s ~120 kW Superchargers.

Since being unveiled, the Tesla Semi has received a strong, positive response from several high-profile customers. In the United States alone, companies such as UPS, FedEx, Anheuser-Busch, and PepsiCo have all placed reservations for the vehicle. To prepare for the rollout of the electric trucks on America’s roads, Tesla has started building the initial charging infrastructure for the Semi. Reports emerged earlier this year that Tesla is partnering with several of the Semi’s reservation holders to build charging stations in key locations frequently traveled by fleet operators. The stations, which would likely be the first Megachargers, will be spaced close enough together so that the Semi has enough range to complete its routes.

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The Tesla Semi is expected to start production sometime in 2019, and though the company has not announced where the vehicle would be manufactured, there is a good chance that the electric long-hauler’s production would be a lot smoother. The Semi, after all, shares several components with the Model 3, such as its electric motors. Considering that Tesla has learned a lot of lessons from the ramp of the Model 3, there is a good chance that the Semi might make it to market earlier than expected.

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 says its Texas lithium refinery is now operational and unlike anything in North America

Elon Musk separately described the site as both the most advanced and the largest lithium refinery in the United States.

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Credit: Tesla/YouTube

Tesla has confirmed that its Texas lithium refinery is now operational, marking a major milestone for the company’s U.S. battery supply chain. In a newly released video, Tesla staff detailed how the facility converts raw spodumene ore directly into battery-grade lithium hydroxide, making it the first refinery of its kind in North America.

Elon Musk separately described the site as both the most advanced and the largest lithium refinery in the United States.

A first-of-its-kind lithium refining process

In the video, Tesla staff at the Texas lithium refinery near Corpus Christi explained that the facility processes spodumene, a lithium-rich hard-rock ore, directly into battery-grade lithium hydroxide on site. The approach bypasses intermediate refining steps commonly used elsewhere in the industry.

According to the staff, spodumene is processed through kilns and cooling systems before undergoing alkaline leaching, purification, and crystallization. The resulting lithium hydroxide is suitable for use in batteries for energy storage and electric vehicles. Tesla employees noted that the process is simpler and less expensive than traditional refining methods.

Staff at the facility added that the process eliminates hazardous byproducts typically associated with lithium refining. “Our process is more sustainable than traditional methods and eliminates hazardous byproducts, and instead produces a co-product named anhydrite, used in concrete mixes,” an employee noted. 

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Musk calls the facility the largest lithium refinery in America

The refinery’s development timeline has been very impressive. The project moved from breaking ground in 2023 to integrated plant startup in 2025 by running feasibility studies, design, and construction in parallel. This compressed schedule enabled the fastest time-to-market for a refinery using this type of technology. This 2026, the facility has become operational. 

Elon Musk echoed the significance of the project in posts on X, stating that “the largest Lithium refinery in America is now operational.” In a separate comment, Musk described the site as “the most advanced lithium refinery in the world” and emphasized that the facility is “very clean.”

By bringing large-scale lithium hydroxide production online in Texas, Tesla is positioning itself to reduce reliance on foreign refining capacity while supporting its growth in battery and vehicle production. The refinery also complements Tesla’s nascent domestic battery manufacturing efforts, which could very well be a difference maker in the market.

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Tesla Optimus V3 gets early third-party feedback, and it’s eye-opening

Jason Calacanis’ remarks, which were shared during a discussion at CES 2026, offered one of the first third-party impressions of the yet-to-be-unveiled robot

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Credit: Tesla/YouTube

Angel investor and entrepreneur Jason Calacanis shared some insights after he got an early look at Tesla’s upcoming Optimus V3. His remarks, which were shared during a discussion at CES 2026, offered one of the first third-party impressions of the yet-to-be-unveiled robot.

Calacanis’ comments were shared publicly on X, and they were quite noteworthy.

The angel investor stated that he visited Tesla’s Optimus lab on a Sunday morning and observed that the place was buzzing with energy. The investor then shared a rare, shocking insight. As per Calacanis, Optimus V3 will be so revolutionary that people will probably not even remember that Tesla used to make cars in the future.

“I don’t want to name drop, but two Sundays ago, I went to Tesla with Elon and I went and visited the Optimus lab. There were a large number of people working on a Sunday at 10 a.m. and I saw Optimus 3. I can tell you now, nobody will remember that Tesla ever made a car,”  he noted.

The angel investor also reiterated the primary advantage of Optimus, and how it could effectively change the world.

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“They will only remember the Optimus and that he is going to make a billion of those, and it is going to be the most transformative technology product ever made in the history of humanity, because what LLMs are gonna enable those products to do is understand the world and then do things in the world that we don’t want to do. I believe there will be a 1:1 ratio of humans to Optimus, and I think he’s already won,” he said. 

While Calacanis’ comments were clearly opinion-driven, they stood out as among the first from a non-Tesla employee about Optimus V3. Considering his reaction to the humanoid robot, perhaps Elon Musk’s predictions for Optimus V3 might not be too far-fetched at all.

Tesla has been careful with its public messaging around Optimus V3’s development stage. Musk has previously stated on X that Optimus V3 has not yet been revealed publicly, clarifying that images and videos of the robot online still show Optimus V2 and V2.5, not the next-generation unit. As for Calacanis’ recent comments, however, Musk responded with a simple “Probably true” in a post on X.

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Tesla taps Samsung for 5G modems amid plans of Robotaxi ramp: report

The move signals Tesla’s growing focus on supply-chain diversification and next-generation communications as it prepares to scale its autonomous driving and robotaxi operations.

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Credit: Samsung Electronics

A report from South Korea has suggested that Samsung Electronics is set to begin supplying 5G automotive modems to Tesla. If accurate, this would mark a major expansion of the two companies’ partnership beyond AI chips and into vehicle connectivity. 

The move signals Tesla’s growing focus on supply-chain diversification and next-generation communications as it prepares to scale its autonomous driving and Robotaxi operations.

Samsung’s 5G modem

As per industry sources cited by TheElec, Samsung’s System LSI division has completed development of a dedicated automotive-grade 5G modem for Tesla. The 5G modem is reportedly in its testing phase. Initial supply is expected to begin in the first half of this year, with the first deployments planned for Tesla’s Robotaxi fleet in Texas. A wider rollout to consumer vehicles is expected to follow.

Development of the modem began in early 2024 and it required a separate engineering process from Samsung’s smartphone modems. Automotive modems must meet stricter durability standards, including resistance to extreme temperatures and vibration, along with reliability over a service life exceeding 10 years. Samsung will handle chip design internally, while a partner company would reportedly manage module integration.

The deal represents the first time Samsung has supplied Tesla with a 5G vehicle modem. Tesla has historically relied on Qualcomm for automotive connectivity, but the new agreement suggests that the electric vehicle maker may be putting in some serious effort into diversifying its suppliers as connectivity becomes more critical to autonomous driving.

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Deepening Tesla–Samsung ties

The modem supply builds on a rapidly expanding relationship between the two companies. Tesla previously selected Samsung’s foundry business to manufacture its next-generation AI6 chips, a deal valued at more than 22.7 trillion won and announced in mid-2025. Together, the AI chip and 5G modem agreements position Samsung as a key semiconductor partner for Tesla’s future vehicle platforms.

Industry observers have stated that the collaboration aligns with Tesla’s broader effort to reduce reliance on Chinese and Taiwanese suppliers. Geopolitical risk and long-term supply stability are believed to be driving the shift in no small part, particularly as Tesla prepares for large-scale Robotaxi deployment.

Stable, high-speed connectivity is essential for Tesla’s Full Self-Driving system, supporting real-time mapping, fleet management, and continuous software updates. By pairing in-vehicle AI computing with a new 5G modem supplier, Tesla appears to be tightening control over both its hardware stack and its global supply chain.

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