One difference, you lose about 10% of the energy density with hydrogen, so you'd have to refuel a little bit more often. But I think that's close enough that it's good enough for most applications.

Yeah. I think most people are not aware of the energy requirements of industrial machinery. There's a huge difference between gliding a car across well maintained concrete with wheels, and moving literal tons of earth out of the way.

There is a reason we have not seen backhoes, tractors, bulldozers, moving to batteries. Batteries just are not energy dense enough

I'm confused by one thing, we should be seeing countries without domestic fossil fuels moving to hydrogen for their Air forces. Just as a domestic security issue. Unless they've been doing it really quietly, I've missed it. There is one demonstrator flight transatlantic flight from France to the USA using hydrogen fuel. But that's all I've seen. I would really expect China to be going 110% on hydrogen for their air force. Germany too for that matter. Any rich country without domestic oil, which is fair few of them