In the post that you were responding to I said, “The natural gas and propane leaks that cause structures to blow up are because of explosive mixtures contained within enclosed spaces.”
It seemed like we were on different pages, but maybe not. Do you believe that hydrogen powered vehicles are used in enclosed spaces?
I am not a proponent of the “hydrogen economy”, but vehicles powered by hydrogen are much less of a risk to their users and the public than vehicles powered by Lithium based batteries. Are you going to harass local officials or move away if someone with an electric car moves in next to you?
“High-pressure H2 tanks are durable enough to remain intact even in the event of a high-speed crash. As a result, neither injuries nor deaths have been associated with the use of hydrogen cars relating with the H2 components, at the time this article was written.” The first internal combustion engine was invented in 1806 ran on hydrogen. The first successful hydrogen powered automobile was produced in 1860.
https://www.fastechus.com/blog/the-surprising-history-of-hydrogen-vehicles
Vehicles powered by hydrogen-based fuel cells have many advantages over vehicles powered by lithium-based batteries and safety is one of them. Hydrogen has less of an opportunity to harm the public because than other gasses used for fuels because it dissipates so quickly because it is the lightest gas in existence. H2 has 1/2 the specific gravity of helium.
Of course not, but they are parked in enclosed spaces. Manhattanites take their scooters via elevator up to their apartments to prevent theft. There have already been apartment fires in NYC from lithium batteries igniting, (almost certainly while on charge -- don't get me started on that subject).