So a pickup missing a good chunk of the bed? That's not going to work out too well.... Honda are no slouches in engineering and I posted the cut away with the tank they used but here it is again: Compare that to the Tesla Model Y The battery pack is just part of the frame, the only thing going into the cabin there is the second motor in the rear. Plus you don't want a hydrogen container under people.... In the rear it is safer than a gas tank but imagine that flame inside the cabin. But if you think it's practical answer these few questions: 1) How will Americans react to losing a lot of cargo space? Giving up essentially their trunk to have a hydrogen tank there. When cars are designed from the ground up for batteries they don't face this. 2) How would we provide the infrastructure needed to have H2 everywhere? The best high pressure liquid lines don't have much of a loss compared to other methods of transport but now you're talking about a huge network of pipelines across the country, then there would be all the filling stations. That would cost what trillions? It wouldn't be easy for stations to store it either because remember the tanks needed are much, much larger than the equivalent ones for gasoline so basically everything needs to be torn up. Also the amount of electricity needed would be higher due to losses of H2 from storage and the inefficiencies of using X power to first break up water molecules, and then to reform them. 3) How do you make a market for it? Ramping up EV's is easy since charging stations just need to be connected to the pre-existing grid and that infrastructure has been growing in parallel to our existing gas station network. 4) What's the advantage? You get less space per vehicle, they are still going to be very expensive with the fuel cells/batteries or require fuel tanks that are much, much larger for hydrogen combustion engines. And while they can "fill up" relatively quickly there are multiple promising battery technologies which can as well and even advancements of the current tech has seen large gains. 5) Due to all of the above why would you as a country invest trillions for a technology which has essentially 0 market share VS one which has been growing rapidly for the last decade and has already had a lot of advancements in increased performance and cutting costs through that time and is on track to continue that trend?