This weekend, a tragic crash involving a 2019 Tesla Model S ended up claiming the lives of two individuals, a 59-year-old and a 69-year-old, both of whom are yet to be identified. Considering the nature of the case and partly due to the involvement of a Tesla, the incident has been covered by both local and national media outlets. This became quite notable in social media platforms, where the crash has been linked to Autopilot.
Two killed in huge blaze after driverless Tesla on autopilot crashes into tree https://t.co/JcwWM9hZAf pic.twitter.com/kvwUdg5ety
— New York Post (@nypost) April 18, 2021
This guide presents what is currently known about the tragic incident, as well as some commentary and videos from EV owners who have attempted to replicate (at least to a degree) the alleged events that led up to the tragic Model S crash.
What happened?
On Saturday night, a 2019 Model S crashed into a tree at about 11:25 p.m. in the Carlton Woods Subdivision on Hammock Dunes Place in Houston, Texas. According to authorities, the Model S crashed into a tree after failing to navigate a turn at high speed near 18 Hammock Dunes Place. The collision resulted in a fire that took the local fire department about four hours and over 30,000 gallons of water to extinguish. Investigators have found two victims from the incident, one sitting on the passenger seat and another in the back seat.
What did witnesses say?
KPRC 2 reporter Deven Clarke was able to speak to one of the victims’ brother-in-law, who stated that the Tesla owner and a friend simply wanted to take the car out for a spin. The brother-in-law remarked that there were just two people in the vehicle. He also added that the Tesla owner backed out of the driveway and then may have hopped in the back seat before crashing a few hundred yards down the road. The owner was reportedly the person found in the back seat of the car.
What has the police said?
In a statement to KHOU-11, Harris County Pct. 4 Constable Mark Herman remarked that deputies who recovered the Tesla are certain that the vehicle had no driver when it collided with the tree. He also emphasized that some of the authorities who responded to the incident were reconstructionists, and that they were very confident that there was no one driving the vehicle when it crashed.
“They are 100% certain that no one was in the driver seat driving that vehicle at the time of impact. They are positive. And again, the height from the back seat to the front seat, that would be almost impossible, but again our investigators are trained. They handle collisions. Several of our folks are reconstructionists, but they feel very confident just with the positioning of the bodies after the impact that there was no one driving that vehicle,” Herman said.
Was Autopilot involved?
Despite the inflammatory social media posts from some media outlets, it has not been determined yet if Autopilot had been active in the Model S when it collided with the tree. It should be noted that the roads in the Carlton Woods Subdivision on Hammock Dunes Place do not seem to have visible lane lines, which is a requirement for Autopilot’s activation. Regular cruise control could be activated in such areas as per videos from Tesla owners, but Autopilot and Full Self-Driving features are generally inaccessible in a residential area, at least in their current state.
This should dismiss the idea that AP was somehow the cause of this horrific incident. I pray for the family and friends of the deceased. Let’s trust the real investigators will discover what really happened here. pic.twitter.com/0tp8Vbh6fH
— Mikey Likes (@mliebow) April 18, 2021
Is the NTSB investigating the incident?
In a statement to Bloomberg, National Transportation Safety Board spokesperson Chris O’Neil confirmed that the NTSB does not plan to open a new probe about the tragic incident.
What happens when Autopilot is engaged and a driver unbuckles the seatbelt?
One scenario that has been suggested is that the driver might have activated Autopilot and jumped into the back seat. This would have been a tricky maneuver as the driver would have had to unbuckle himself, which results in Teslas engaging their alerts and eventually coming to a stop. Such a scenario was demonstrated by FSD Beta user @brandonee916.
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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.
News
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
