I agree, the amount of energy stored in these lithium based batteries makes them all catastrophies waiting to happen.
I've been making that point since they first started selling Tesla cars but was challenged by rabid futurephiles, obsessed with the notion that anything new automatically is da Schiz, who insisted that gasoline ICEs were every bit as dangerous.
But the truth of the matter is you can have small gasoline leaks that pose little or no danger. And even a YUGE gas leak can come to no harm. But when you're talking a 500-Amp storage battery (750-A peak), EVERY leak, no matter how small, is potentially fatal.
Even Ol' Sparky, according to my research, delivers just 20 Amps at most.