I think it'll fizzle out. Hydrogen has too many disadvantages. Storage is difficult. Hydrogen will diffuse through most materials. Hydrogen can't be sensed by p

I think it'll fizzle out. Hydrogen has too many disadvantages. Storage is difficult. Hydrogen will diffuse through most materials. Hydrogen can't be sensed by people, so you need special sensors throughout the vehicle and any filling stations. It burns with an almost invisible flame, and it burns in a very wide range of air/fuel mixtures. It's far more flammable than gasoline. You have to build out completely new infrastructure (unlike EVs that only require improving the capacity of our existing electrical grid). Oh, and hydrogen is expensive, and that's if you make it from natural gas (which creates CO2). If you want to use electrolysis of water, the price goes way up. At that point you're using hydrogen as an extremely inefficient battery that can't be charged with the existing power grid.