Yes, it burns. Oxidizes very rapidly, in other words.When is this "very bad idea" going to cease~? We are well beyond the time to divert all this ill spent money from the exploitation of EVs to the development and production of hydrogen power ICEs. It's just so obvious that hydrogen power is the way forward and even be carried to the production of electrical energy The element is so abundant, and great strides have be made recently in producing efficient and cost effective hydrogen producing technology that is already there. Cummins, Toyota, Renault, Honda, Hyundai, Ford, Mazda and BMW are already well along the path to making this technology economically feasible.
The transition to hydrogen power will produce a huge change to our economy and will generate significant changes in our cultural. And "no", the Hindenburg didn't "blow up", it burned rapidly. Hydrogen doesn't blow up, it burns rapidly just as natural gas burns~!
This is precisely why the folks on the fringes of the environmental movement will not like it at all. Well, those that have an understanding of basic chemistry, anyway. The only combustion by-product of hydrogen is water vapor. Oh no! That's a greenhouse gas! Verbotten! More of the misinformed will be supergluing their asses onto intersections and highways.
Well, maybe it has a chance if the narrative forms around 'the emissions are carbon-free'. Getting them to listen to how elemental hydrogen is produced for use as fuel would be a waste of time.