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Tesla Semi Supercharger stop teases sleeper features and 26-camera system
After being sighted on Des Moines, IA on Thursday, the Tesla Semi has been spotted smoothly gliding through Colorado. The Semi was sighted at the Brush, CO Supercharger, where Tesla’s employees accompanying the truck answered questions about the vehicle while it was charging.
The Tesla Semi sighting was shared by recording engineer Erik J. Martin on Twitter. Martin’s posts, one of which was retweeted by the official Tesla Twitter account, featured the Semi as it was rolling into the Brush Supercharger station. Erik mentioned in a series of posts that he was informed that the prototype is the short-range version of the truck, with a range of 300 miles. The Tesla engineers accompanying the vehicle reportedly noted that the Semi was hand-built and that it was largely made of carbon fiber as well.
— Erik J. Martin (@soundanswer) August 30, 2018
Being the short-range version of the electric truck, the Semi currently making its way across the United States is a daycab vehicle, though Tesla’s employees reportedly informed Martin that there would be a variant of the truck that would have space for sleeper features. Such features would be perfect for the long-range version of the electric truck, with drivers being able to take short naps while the Semi is charging at Tesla’s upcoming Megacharger network.
Also notable were the Semi’s cameras, of which there are 26 around the prototype. Tesla’s employees accompanying the Semi reportedly mentioned that there would likely be fewer cameras in the final iteration of the vehicle. Interestingly, while the Semi’s crew was very willing to address inquiries about the truck’s features, they were particularly secretive about the vehicle’s current charging system.
The Tesla Semi is designed to be supported by the upcoming Megacharger network, which is not operational yet. For now, the Semi is using Tesla’s current Supercharger network, though Erik noted that the engineers appeared to be using around 4-6 Superchargers to charge the all-electric Semi truck.
Yep! It was The closest superchargers. They hobble together an adhoc megacharger until those are built out in preparation for the roll out of production #teslasemi
— Erik J. Martin (@soundanswer) August 31, 2018
Tesla’s engineers also reportedly noted that so far, the only locations that have leaked the truck’s visit to their facilities were J.B. Hunt and UPS. This suggests that the Semi might have visited facilities of other reservation holders. One of these is Ruan Transportation Management Systems, which is based in Des Moines, IA. Ruan published a blog post about the Semi’s visit to their facility yesterday, even discussing some of the truck’s remote monitoring features.
“We will continue to be involved with the team at Tesla Motors as they introduce the trucks to the market,” said Cade. “We will work with them directly to ensure the vehicles will serve us and our customers to the level we both expect,” Ruan vice president of fleet services James Cade wrote in a blog post.
Tesla appears to be going full throttle in its efforts to refine the Semi before the vehicle enters production. The truck’s initial specs are already impressive, with its four Model 3-derived electric motors, its 0-60 mph time of 5 seconds flat, and its Class 8 hauling capacity. The Semi is also equipped with several key features, such as jackknife protection, near-infinite brake pads due to its powerful regenerative braking system, and Convoy Mode, a feature that allows the Semis to semi-autonomously draft in close proximity with each other, reducing energy usage from wind resistance.
Watch Erik J. Martin’s video outlining the information he received from the Tesla engineers accompanying the Semi below.
Tesla Cybertruck Lead Engineer Wes Morrill revealed the company has made several changes to the all-electric pickup, which he calls a “living thing, constantly evolving and improving.”
Cybertruck is manufactured at Tesla’s Gigafactory Texas just outside of Austin, and over the past few years, Tesla has continued to make small changes to the pickup to improve everything from cost, reliability, serviceablility, and manufacturability.
“The finish line isn’t getting to production. A product is a living thing, constantly evolving and improving,” Morrill added.
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Some of those changes are yet to be revealed, but perhaps the most notable one was the change Tesla made to the aero shield that sits underneath the truck. In the past, it was aluminum, but now the Cybertruck is using a self-reinforcing polypropylene.
Morrill said that the polypropylene is “stretched into fibers and then laminated into the form,” and is much more durable, much lighter, and significantly cheaper than aluminum when it is manufactured this way.
It also enabled some improvements in the geometry of the Cybertruck, improving the manufacturing around the bolts and edges, in addition to minor form changes. These all benefitted the Cybertruck in more ways than one: specifically with durability and improved drag.
I was surprised by how interested people were to find out we made a relatively benign change to the Cybertruck aero shield, a part of the car most people never even see. So I’ll share some more details.
Here are two photos, the left is one of the latest trucks off the… pic.twitter.com/F5cZo2CZKf
— Wes (@wmorrill3) September 7, 2026
Typically, Teslas are not necessarily identified by model year because these changes are fluid and occur when the company sees fit to implement them. It is not like other automotive companies, which usually make sweeping manufacturing changes when building a new model year.
Instead, Teslas are recognized by their “generation” or “era.” For example, those with a newer Model Y might refer to their car as a “Juniper.” This is the same with Model 3, as many refer to the new body style as the “Highland.”
Tesla’s manufacturing changes are proof of the company’s constant need to improve its products and move things forward with its vehicles. There is no need to drag one’s feet and wait until next year if the product can be made better right now, and that’s precisely what Tesla did with the Cybertruck.
Elon Musk
Tesla Cybercabs narrowly miss deadly Amazon cargo plane crash
An Amazon cargo plane crash near Miami’s airport stopped feet from dozens of Tesla Cybercabs.
An Amazon Prime Air Boeing 767 cargo jet overran the runway at Miami International Airport on Sunday afternoon, killing five people and injuring five more. The jet, operated by North Carolina based carrier 21 Air as Flight 7598, touched down around 2 p.m. after arriving from San Juan, Puerto Rico, then crossed the airport perimeter, plowed across NW 67th Avenue and struck multiple vehicles before catching fire, according to the Associated Press.
Photos and video from the scene show the aircraft’s nose stopped within meters of a fenced staging lot holding dozens of gold painted Tesla Cybercabs, the steering wheel free robotaxi Tesla began putting on public roads in Austin last week. Miami-Dade Fire Rescue has confirmed the plane struck “multiple vehicles” but has not said whether any Cybercabs were among them, and neither Tesla nor airport officials have addressed the fleet directly.
The Cybercabs had not yet entered commercial service in Miami. Tesla’s existing Robotaxi operation there runs on modified Model Y vehicles and has been unsupervised since Ashok Elluswamy confirmed the detail on X in July.
Footage of the plane crash from earlier today | #ONLYinDADE pic.twitter.com/iGoOtnd6cD
— ONLY in DADE (@ONLYinDADE) September 6, 2026
Elon Musk offered the briefest of reactions. Replying to a Zero Hedge post about the Cybercabs sitting so close to the wreckage, he wrote a single word: “Weird.” He has not commented further, and Tesla has not issued a statement.
The timing puts Tesla’s newest vehicle near an unrelated but highly visible tragedy just days after its Austin debut, a launch that had already drawn scrutiny from federal regulators. The National Highway Traffic Safety Administration opened an audit how Tesla certified the Cybercab as compliant with federal vehicle safety standards, a process Teslarati covered after the vehicle’s September 3 launch event. That inquiry concerns the car’s lack of a steering wheel and pedals, not the Miami crash.
Investigators from the FAA and NTSB are focused on the plane, not the parking lot beside it. Flight data reviewed by outlets including Simple Flying show the 767 touched down around 170 knots, well above the 135 to 140 knot range typical for the aircraft, though investigators have not determined a cause. Amazon said it is working with authorities and that its priority is the safety of everyone affected.
Whether any Cybercabs were damaged, and what Tesla plans for the fleet parked near one of the country’s busiest airports, remain open questions.
Tesla has reached a notable benchmark in its autonomous driving program after its Robotaxi fleet surpassed one million miles of unsupervised operation. The company made the announcement during its Cybercab event in Austin on September 3.
Tesla Vice President of AI Ashok Elluswamy told attendees he was happy to report the fleet had achieved one million miles of unsupervised Robotaxi operation as a testament to safety.
The new total marked a sharp increase from the 380,000 unsupervised miles Tesla disclosed during its second-quarter 2026 earnings update in late July.
In roughly six weeks, the company added about 620,000 miles. That acceleration followed Tesla’s decision to remove in-vehicle safety monitors from most of its operations outside the San Francisco Bay Area.
Credit: Tesla
Tesla first launched Robotaxi service in Austin in June 2025 with safety drivers present. It later began fully unsupervised rides and expanded into Dallas, Houston, Miami, Orlando, and Tampa. The San Francisco Bay Area remains the exception, where a safety monitor still rides in the vehicle under California permitting rules.
The company has not released a city-by-city breakdown of the one million unsupervised miles.
The milestone arrived as Tesla began offering public Cybercab rides in Austin. The purpose-built vehicle has no steering wheel or pedals and is designed only for autonomous ride-hailing. Production versions joined the existing fleet of modified Tesla vehicles already operating in the service.
Tesla’s unsupervised mileage is growing at a double-digit weekly rate according to earlier company comments, yet its fleet size remains modest compared with established competitors. Waymo has accumulated more than 200 million fully autonomous rider-only miles. Tesla has described its own unsupervised operations as having recorded zero notable incidents in the period leading up to the July update.
The one-million-mile figure reflects Tesla’s shift from supervised testing to broader driverless service in multiple states. It also highlights the company’s strategy of using both existing Model Y vehicles and the new Cybercab to scale its network.
Credit: Tesla
Whether the rapid recent growth continues will depend on further city expansions, regulatory approvals, and the performance of the purpose-built Cybercab in everyday paid rides. Tesla has not specified how many of the latest miles involved the new vehicle versus the rest of the fleet.
The announcement underscores Tesla’s progress toward a larger robotaxi network while illustrating the remaining gap in total autonomous experience relative to longer-operating rivals.
Tesla Cybertruck engineer reveals new changes in ‘constantly evolving’ pickup
Tesla Cybercabs narrowly miss deadly Amazon cargo plane crash
