Even if hydrogen could be created with 100% efficiency it would still be very poor compared to just using electricity from batteries. The issue is the engines t

Even if hydrogen could be created with 100% efficiency it would still be very poor compared to just using electricity from batteries. The issue is the engines themselves are very inefficient, something like 20-30% and as such the same electricity will go a lot further directly compared to burning hydrogen. There are so many extra inefficiencies with transport and storage compared to existing and improved electrical infrastructure, its just not competitive. It might have some benefits in certain vehicle types where energy density and being far from a grid might make it beneficial but it will be a lot more expensive than electrical vehicles. Portable charging infrastructure with and wind and solar will often be a better option. I can't see hydrogen being anything but niche now unless substantial efficiency is found in the engine optimisation, generation and storage.