Yes that is interesting Dave, as I've never seen/used one, I wonder if charging bays comply with that, or what or if the legal aspect is if closer.
Imagine a row of 4/6 cars for example, all on charge, or even 1 in a car park, and 1 ignites that spreads to others.
I wonder how insurance companies would deal with that - or even the fire service, they have monumental problems dealing with a EV's on a transporter that catch fire, with 1 being dumped in a ro-ro skip full of water overnight, after a fire tender followed recovery to the salvage yard, in case of further ignition.
Ok, extreme it might be, but can happen.