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cybercricket

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Not to redirect from the tragedy of three people dying in a wreck, but I'm curious about the fire. I was under the impression that, once on fire, EV batteries were nigh impossible to extinguish. If that's the case, I'd expect to see more damage to the tree and surrounding foliage, the tires, etc.

There's a few videos of the local news coverage on youtube. The positioning of the truck makes it look (to me) like they were going too fast and went wide around that curve. Glad the dude following them was able to pull someone out.
Isn't Tesla using some special foam to isolate the cells in case of a thermal runaway ?
 


Startreknerd

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Mal

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This worse one didn't catch fire and four survived. Seems batteries are better and not really to fear. The fear should be in a regular crash, and a fire in general. Which happens to all vehicles.

https://nypost.com/2024/11/04/world...lously-survive-after-horror-cybertruck-crash/
What would be the ignition and fuel source in a solo EV car crash, though?

In an ICE car, there's plenty of volatile gas vapor available. In an EV, if not thermal runaway of the battery, what would be the equivalent fire source?
 

Startreknerd

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What would be the ignition and fuel source in a solo EV car crash, though?

In an ICE car, there's plenty of volatile gas vapor available. In an EV, if not thermal runaway of the battery, what would be the equivalent fire source?
In ICE vehicles, just like EVs, the primary combustion sources immediately after a crash is break fluid and wiring. These burn in any vehicle no matter what with enough heat.
 

CyberGus

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it isn’t normally considered a design flaw if unconscious or non-ambulatory people cannot get out of a vehicle.
Right. Unconscious people can’t even get out of bed.

I think the conventional wisdom is to avoid moving after an accident, and wait to be assessed by paramedics. But an EV can experience thermal runaway quickly, so the injured should exit the vehicle ASAP before the shock wears off and the pain from injury makes it impossible to move.
 


CyberGus

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The Good Samaritan was able to open the door, or get through the window somehow…

One of the Wham Baam videos showed a thief hitting the frameless Cybertruck window until it cracked, and then rolled it downward in just a few seconds.

I think once the window cracks, pushing from the inside should make it fold at the threshold.
 

YDR37

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Standard window-breaking tools (ResQme, LifeHammer, etc) will work on tempered glass, but not on laminated glass. The ResQme and LifeHammer websites explicitly acknowledge this limitation.

Laminated glass used to only be used on windshields, but it is now often found on side and rear windows, particularly on more expensive vehicles (including the Cybertruck). Laminated glass doesn't shatter, even if it is completely punctured. You need to puncture it, then insert a saw in the hole and cut out a large hole with the saw. There are manual saws that can cut laminated glass, but they take some time to use. I asked a firefighter about this, and the only tool that he could suggest for fast exit through laminated glass was a battery-powered Sawzall with a laminated glass blade.
Another option: the Rhyno windshield cutter, a battery-powered handheld tool for windshields, should also work on laminated glass windows generally. Unfortunately it starts at $725. Marketed to first responders, not consumers.
 

YDR37

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You're supposed to be using steel balls instead.
Keep a 10 lbs dumb bell in the car.
With laminated glass, there is a plastic sheet bonded between two glass layers. You can crack the glass with a steel ball (as demonstrated in the 2019 Cybertruck unveiling) or other heavy weight, but the glass will still stick to the plastic sheet. You can't get through the window unless you actually make a large hole in the internal plastic sheet with a saw or cutter.
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