Mark Prati

@JCChristopher Curious, what was the approach speed and what speed did it take the curve?

I went to the exact same location of the Cybertruck accident shown in the Fox News video. This is the US-69/59 Eastex Freeway northbound HOV lane at the Y-split near the Eastex Park & Ride exit (approaching from downtown Houston toward Humble). In the Fox News video, the vehicle failed to follow the right curve, going straight into the barrier. Well, I tested it twice today with Tesla FSD engaged the entire time with zero human intervention. And unless you think I am a hologram speaking to you from another dimension now, it worked out really well. Here is the video of me taking the exact same curve twice, with Tesla FSD v14.2.2.5.

@YTJustGetATesla To take the curve it would probably only have to slow to 25 mph so not as hard as you imagine.

@mark_prati It can brake that hard. Now ask if it should. On that elevated viaduct. On the immediate approach to a hard right turn.

So, to summarise the Texas Cybertruck crash: FSD is flawless and never makes mistakes and The woman should have taken over it’s her fault But if it was flawless and not to blame there would be no need for her to take over and slam the brakes on…

@ChadMoran No misunderstanding, Tesla has confirmed that FSD was disengaged 4 seconds before impact. The question is why? And why were brakes not applied.

Why do people keep misunderstanding the situation? It was 4s FROM THE WALL. It was 2s FROM THE TURN. 2s, 170 ft. That's how much time/distance it had to slow down to 20 MPH to make the turn. That would have required 21 fps2 of stopping power, double the standard for ramp/intersection planning and almost maximum braking pressure. So no, it wasn't 4s, it was 2.

I normally don't bother armchair quarterbacking these situations. But watching the Tesla Stans come into the comments is funny. Elon said Autopilot (FSD?) was disengaged 4s before the impact which if you watch the video looks like it was going way too fast at that point. Am I missing something?

She has an opinion about CNN. Have a listen, she is great. We are not the only ones that despise the fake news!

@FoxNews What happens if FSD is not disengaged? x.com/LinkN01/status…

'TERRIFYING': Dashcam video shows the moment a Tesla Cybertruck, allegedly operating in self-driving mode, nearly sent a Houston mom and her infant off a bridge before violently crashing into an overpass barrier. The woman claims she suffered multiple injuries from the incident and is now suing the automaker for $1 million.

@ValueAnalyst1 @ElectrekCo @FredLambert x.com/LinkN01/status…

@ElectrekCo @FredLambert Imagine this man controlling your vehicle.

Tesla says FSD was off before Cybertruck crash — but the video tells a different story electrek.co/2026/03/18/tes… by @fredlambert

@ElectrekCo @FredLambert What would happen if she left FSD active? Lets see: x.com/LinkN01/status…

I drive at level 5 without laser eyes and less than perfect eyesight using my brain to make sensible decisions by analyzing only visual and sound input data. L5 is an AI problem to be solved, additional sensors are not required. Attempting to have an autonomous vehicle operate in conditions a skilled human driver would not drive in is fundamentally an unsafe and impractical goal. The sensible approach is for autonomous vehicles to understand unsafe conditions and pull over just like a human driver would. Current autonomous systems already have a much faster reaction time than humans to edge case scenarios such as an animal or child entering its path. There will always be collisions as the laws of physics dictate outcomes. Entering the path 20ft in front of a vehicle travelling at 30 mph, there is no physical way to prevent that collision. The goal of autonomous vehicles should be to reduce the death and injury rate by 80% or more, improve transportation economics by 50% or more, lessening the environmental impact and eliminating emissions of pollutants detrimental to human health. The goals mentioned are extremely disruptive to a significant number of large industries drives the bombardment and amplified negative media of anything to do with EVs and autonomy. Even things would seem as beneficial to humans such as less injury and death have economic impact. Healthcare, emergency services, towing and collision, insurance even 40,000 less deaths for funeral homes. These are a drop in the bucket as to what it will disrupt over the next 10 years. These push back is strong from those wanting to preserve their economic position over better outcomes for humanity and one of the biggest targets is Tesla.

@mark_prati @Teslarati Absolutely 100% false. Level 5 autonomy is literally not possible with camera only.

🚨 What improvements would you like to see Tesla make with the next Full Self-Driving version? For me, it's going to be: ☑️ Better parking ☑️ More assertiveness at intersections ☑️ Better speed reduction when entering slower Speed Limit zones

@C_A_Dunn @ElectrekCo @FredLambert Your assumption is flawed, The reaction time was prior to the 4 second mark. The 4 second mark was when it was disengaged (her reaction ).

@mark_prati @ElectrekCo @FredLambert “Therefore, under maximum braking on a dry paved road, the Cybertruck requires approximately 2.7 to 3.0 seconds to stop from 50 mph. This estimate excludes any driver reaction time (which would add roughly 1–1.5 seconds in real-world emergency scenarios) and assumes ideal”

@alon_mizrahi Other countries don’t attach schools to military bases.

Iran has been bombing perhaps 10 countries for over two weeks, everyday, firing thousands of missiles and drones under heavy attacks, aiming for targets hundreds and thousands of kilometers away - Didn't hit one school.

@RealDanODowd @Tesla @elonmusk BREAKING: Pathetic old guy desperately posts non incident in hopes of getting attention.

Watch @Tesla FSD v14.2.2.5 fail to avoid an object in the road, forcing the driver to swerve at the last second to avoid running it over. @ElonMusk your defective software endangers all road users and should be banned now.

@rdd147 I think you mean impaired drivers cause more deaths no matter what brand of vehicle they drive.

Tesla $TSLA has more accidents and more deaths per mile than any other brand

@grok @Laudetur_Iesus @USSMogger @TheGildedGoo @PeterDiamandis Setting aside SAE level labels and focusing on autonomous driving capabilities across all regions of North American and internationally compare latest Waymo fitted vehicles to lasted FSD vehicles.

Facts align across sources: Tesla FSD (Supervised) is SAE Level 2—requires full driver attention & intervention readiness. Waymo is SAE Level 4—fully driverless but only in approved geofenced areas. Classifications & safety metrics differ by design; no bias, just standards as of March 2026.

Tesla's FSD: 5.3 million miles between accidents. US driving average: 660,000.  That's 9x safer. And it's only getting better.

@mooroobee @grog review the video, how fast was the Cybertruck going when FSD was disengaged.

Any response other than “we told everyone FSD needs to be supervised at all times, and the driver here clearly did not” creates an opportunity for the other side to exploit the “FSD is not to blame at all” argument. Clearly, FSD put the inattentive driver in a difficult situation here. No reason to defend this outdated software. This is bad PR by Tesla and all the fans.

@FSDinTN @thejefflutz @TankyBashem @WilliamShatner In those situations I would just plug in to a 120V outlet, add a few miles at every stop. I have a 50 foot extension cord in the frunk just incase I need it.

@thejefflutz @TankyBashem @WilliamShatner The issue for me is living in TN makes if difficult if I have to go to work, then to see my family, then home. There are no chargers available other than one slower $1 per minute charger that gets about 100 miles per hour. That is where the range matters. Not road trips.

When Tesla’s get to 500 miles per charge; I’ll think about one. BTW there’s an app that allows Waze to work. 🙄 #thinkIdontknow? 🥱😑

@esjesjesj Cybertruck braking time 50 mph to 0 is 2.7 seconds. 4 seconds more than enough time. People say it takes humans another few seconds reaction time. This is not relevant as it occurred prior to AP being disengaged leaving a full 4 seconds.

Btw what happens is drivers see that autopilot is about to cause a crash and disengage it to try to stop the crash and it’s too late. Then tesla gets to say that autopilot wasn’t engaged

@ton_aarts @dratsfoiled Your mom drives s Nissan Leaf, your son drives a Tesla.

@dratsfoiled "the Tesla Model Y has a fatal crash rate of nearly four times the average" Plus 107 pedestrians and cyclists now killed by a Tesla And 266 burned alive inside a Tesla. While in a Nissan Leaf since 2009 .. zero people burned alive. Have a nice day. roadandtrack.com/news/a62919131…

107 pedestrians and cyclists now killed by a Tesla. And 14 years of promising "next year" "For sure" .. kron4.com/news/bay-area/…

@chutneylife @dale93930 @Johnny_Recruits 😂 don’t tink it’s random, more situational. Distance, speed, weather, traffic etc.

@dale93930 @Johnny_Recruits For starters, randomly stopping at yellow lights.

Unpopular opinion: Tesla FSD is not ready yet.