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Tesla Roadster performance specs are actual and not theoretical, says test driver
Emile Bouret, the man behind the wheel of the next-gen Roadster during the vehicle’s test drives last November, recently called on all car enthusiasts to support the upcoming all-electric supercar. According to the veteran test driver, vehicles like the next-generation Roadster have the potential to make the automotive world a “better place,” considering that it would likely trigger a race to make cars that are even more impressive.
Bouret has worked with Tesla since the company’s early days. A close friend of Tesla chief designer Franz von Holzhausen and a 28-year veteran of the auto industry, Bouret has been asked to test drive the electric car makers’ vehicles from the original Tesla Roadster and the Model S. During his interview with YouTube’s VINwiki channel, Bouret admitted that he does not really understand the hate being directed towards the next-gen Tesla Roadster.
“I love that I live in a world where all these cars exist. You have Koenigseggs and Paganis and Ferraris and Lamborghinis and McLarens and Porsches and Rimacs and Teslas. So, I know there’s a lot of hate out there, but I just don’t understand it. If you’re a car person, wouldn’t you root for everybody? I’m definitely rooting for them because the world will be a better place if that car does get built and it gets on the road, because other people are gonna build cars to beat it — and we’re gonna win.”
The next-generation Tesla Roadster gave the auto industry a massive surprise when Elon Musk unveiled the vehicle last November. The all-electric supercar’s claimed specs, after all, including its 0-60 mph time of 1.9 seconds, it’s quarter-mile time of 8.8 seconds, and its range of 620 miles per charge, have caused some controversy among conventional car enthusiasts. Among the most prominent points of skepticism include speed limitations because of the vehicle’s tires, as well as battery technology that is yet to be attained.
Tesla, however, has assured that the specs announced for the next-gen Roadster are actually conservative. According to Bouret, the upcoming all-electric supercar’s figures related by Elon Musk were not theoretical. They were the actual numbers that their tests have shown.
“Those aren’t theoretical. Those aren’t calculations. We’ve done those numbers. And I probably shouldn’t say that those numbers are even conservative, but they are. That thing is going to be a proper weapon,” he said.
The pervading doubts cast on the next-generation Tesla Roadster’s speed and range are understandable, considering that no other vehicle on the road today boasts comparable specs and performance. Over the past few months, however, Tesla has been dropping hints that the company does have all the necessary resources it needs to attain, or even surpass, the vehicle’s specs that were announced last November.
A white next-gen Tesla Roadster makes an appearance during the 2018 annual shareholders meeting. [Credit: Dennis Pascual/Twitter]
Just last month, for example, Elon Musk openly discussed the idea of using some of SpaceX’s technology to augment the performance capabilities of the next-generation Tesla Roadster. According to Musk, the upcoming supercar would use Composite Overwrapped Pressure Vessels (COPV), which are used by SpaceX’s Falcon rockets during re-entry and landing, to help the car’s acceleration and maneuverability. As we noted in a previous report, the seemingly outlandish idea is actually feasible.
As for the next-gen Roadster’s battery technology, Tesla CTO JB Straubel discussed it best during the company’s Q1 2018 earnings call. While addressing a question about the Tesla Semi’s range, Straubel noted that much of the doubts behind the company’s estimated range for its vehicles comes from a misunderstanding of the company’s battery tech.
“I think the key point is that it doesn’t require a dramatic breakthrough. So there’s a fundamental misunderstanding, I think, of what the current technology in our existing products can actually do. If they’re benchmarking sort of the best battery pack they can buy from a supplier, and then mapping that with what the Semi could do, it doesn’t solve. I think that’s maybe where most of it is coming from, but we basically have what we need in-house, and understand how to do those specs today,” Straubel said.
The next-generation Tesla Roadster is expected to enter production sometime in 2020. Test drives for the vehicle are expected to begin late next year.
Watch Emile Bouret’s discussion of the next-generation Tesla Roadster in the video below.
A Tesla Semi caught fire in Hayward, California, which caused both directions of traffic to shut down for hours before being completely reopened early on Wednesday, the California Highway Patrol said.
The fire occurred just after 5:30 local time in Hayward on Tuesday, as the Semi caught fire in the southbound lanes of I-880 before CHP officials made the decision to shut down both lanes of traffic due to potential risks from hazardous chemical smoke.
There were no injuries reported.
🚨 A Tesla Semi reportedly caught fire, with California Highway Patrol confirming. The Semi was on I-880 SB
An estimated 5,000 to 7,000 semi-truck and large commercial vehicle fires occur on U.S. roadways every year
— TESLARATI (@Teslarati) October 28, 2026
The cause of the fire is currently unknown, as neither Tesla nor the CHP have not determined a cause.
However, some images taken before the Semi was completely destroyed by the fire seem to indicate this might have been an older unit, as it appears to be one of the designs that Tesla shipped as part of its pilot program, before revising it and starting mass production just a month ago.
@Tslachan From on of the videos looks like it’s an old Semi (not the refresh version that recently started production) https://t.co/KzwmR2kXow
— Area Under The Curve 🎗️ (@AreaUnderCurve) October 28, 2026
At the time of publication, CHP had not returned our request for a comment for additional details, including the Semi involved and any potential collaboration on an investigation between the CHP and Tesla. We will update this story when we hear back from them.
The southbound lanes were reopened at 3:30 a.m. on Wednesday, with the northbound lanes opening last night a few hours after the fire began. The CHP did state that the lithium batteries were “incredibly difficult to extinguish,” according to NBC Bay Area.
The truck’s driver said that the Semi caught fire, but he did not have an explanation.
An estimated 5,000 to 7,000 semi-truck and large commercial vehicle fires occur on U.S. roadways every year.
Tesla’s launch of the “Emergency Drive Away” function a few months back offered owners a safe option to evacuate an area if they were in reasonable danger. The function finally got its first use in the real world, but it appears it was by mistake.
A video shared by u/Joshalander in the r/TeslaLounge subreddit recorded the instance from his vehicle and said the incident took place in Austin this past weekend during the city’s F1 Race.
“Was charging around 6 AM this past Sunday in Austin before heading to the F1 race and heard a pop. Looked over and saw the new emergency drive-away feature in action. Genuinely felt bad for the dude when he got out and realized what happened, since he looked exhausted and only seemed to half-read the prompts.”
🚨 Here’s the first look at Tesla’s Emergency Drive Away function in action:
Apparently this driver accidentally enabled it and drove forward; you can see the Supercharger pull with the car.
Tesla said previously this would cost up to $25k if not used properly. https://t.co/B4qQRrsO6B
— TESLARATI (@Teslarati) October 28, 2026
Emergency Drive Away unlatches the Supercharger connector from the vehicle, but still causes damage to both the car and the Supercharger. Tesla has said that it will cost up to $25,000 in repairs to have everything fixed back to normal.
Additionally, the company said that if it were not used in an emergency situation, the driver of the vehicle who activated the Emergency Drive Away feature would be responsible for all repair costs.
Tesla constitutes the following situations as reasonable justifications for activating the feature:
- You face an immediate threat to your life or personal safety.
- You must leave the area immediately.
- Exiting the vehicle is unsafe.
- Unplugging the charge connector would unreasonably delay your departure or expose you to a risk to your personal safety.
After using the feature, Tesla requires the driver to schedule Service so the car can be inspected.
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Tesla’s Cybercab battery design could make robotaxis even cheaper
Tesla built the Cybercab’s battery pack with spare room for a future switch to LFP.
Tesla built the Cybercab’s battery pack with empty space inside it on purpose, and the reason points to a cheaper robotaxi down the road.
Robert Sumpf, Tesla’s director of mechanical design engineering for battery modules and packs, said the extra room beside and beneath the Cybercab’s modules was left there so the company can move to lithium iron phosphate cells later. “So, we protected this pack to go to an even lower energy dense chemistry as we scale and need to bring LFP into the platform,” Sumpf said in a Cybercab deep dive with Munro Live.
The Cybercab runs on Tesla’s own 4680 cells with a nickel chemistry today. LFP cells store less energy for their size, so a straight swap would cut range. The reserved space lets Tesla add more LFP cells to make up the difference. In return, Tesla would get cells that cost less, run cooler and survive more charge cycles. LFP became the most used EV battery chemistry in the world last year.
Not all of that room was planned for a chemistry change. Lars Moravy, Tesla’s Vice President of Vehicle Engineering, said part of it exists because “we didn’t need as many batteries as we thought we did.” Tesla told Sandy Munro in early 2025 that it was targeting a Cybercab pack under 50 kWh with close to 300 miles of range.
The pack also breaks from the structural design Tesla used in some Model Y and Cybertruck builds. Instead of potting hundreds of cells into one block, the Cybercab uses four separate, individually sealed modules, so a bad module can be replaced without scrapping the whole pack. Sumpf was blunt about the older approach, giving the Model Y structural battery “a grade D” because it was hard to build and nearly impossible to repair. He estimated a fully structural pack gains about 10% more cell volume, but said “the issue is the service cost.”
That cost matters more for a car that rarely sits parked. Cybercab chief engineer Eric Earley said replacing an entire pack “before half a million miles is a killer on cost,” which is why remanufacturing and serviceability were built into the design from the start.
The same Munro Live tour produced Moravy’s admission that the Cybercab line at Giga Texas is now outpacing Robotaxi deployments, along with a look at the robotaxi’s unorthodox paint process. Tesla is aiming to deliver the first Cybercabs to outside customers by the end of 2026, though Elon Musk has said the vast majority will stay owned by Tesla and run as a transport service.
Sumpf did not give a date for an LFP version, name a cell supplier or say how a chemistry change would affect range. For now, the 4680 cars keep piling up: Texas DMV records from Tuesday list 544 Cybercabs authorized for Tesla’s Robotaxi fleet, more than the 507 Model Ys on the same roster for the first time.
Tesla Semi catches fire in California: what we know
Tesla’s ‘Emergency Drive Away’ function gets its first use in the real world
