Electric cars!

What can I say! I think I've said it many times before! Never put your belief in man who can't put one foot in front of the other without tripping and falling at every unforeseen given opportunity 

I assume you all know that the EV batteries can suffer from thermal run away.
In an ideal situation the battery should be submerged in water and left for a day or two, which is not really practical unless there is a big tank handy.
Next best thing is to continually cool with water spray/hoses.

Indeed, they were there for 14 hours to cool and monitor, not to put it out.

Yes, batteries are dangerous.....petrol is a bit risky too.

Yes, of course. I’m no firefighter but the general course of action is to ‘let them go’ whilst trying to keep them as cool as possible. Water is the go to method for lithium-ion fires (although not lithium-metal!) in all industries as far as I’m aware.

There is absolutely no grounds to refuse to test an EV, even with a pacemaker, although dismantling etc is a different kettle of fish and not a good idea.