Wow, look at the thickness of those charging cables! There is some real CURRENT there. And of course, since these cars must sit so long, no one was around to move the others out of the area so one fire took out at least three vehicles.
I used to have something that took a small, $200 lithium battery for portability that I didn't use much anymore so I threw the battery away, I didn't want it in the house anymore worrying about it catching on fire in its discharged state.
So these EV cars need some sort of complex sensing circuit to detect excess current or other battery problems and cut the current draw off as soon as detected, then some sort of fire suppression system underneath. Insurance companies will charge a premium for storing and charging EV cars in house and require or offer discounts for having a fire suppression system in your garage. Sleep well.
Can you imagine the environmental mess of cleaning up after the fire in the video? Can you imagine the toxins released in that fire? All kinds of tasty things go into making lithium batteries including an agent used in the making of nerve gas.