The Rimac that Richard Hammond crashed was catching fire due to battery cell shorts for 5 days after the crash.
I read a post from a fireman that said Tesla had held a training event to show the guys how to isolate and disconnect the batteries in a crash scenario, however this doesn't help with damaged cells. He confirmed the requirement to attend the crash for a long period of time to make sure any other shorts don't cause other fires.
He then went on to say that if you wanna talk about scary, consider hydrogen powered vehicles.