H2 needs rebalance

H2 gets consumed way too fast. A full h2 tank on a wheel based rover using a hydrogen engine is empty before you've gotten anywhere. With a tank that size, I should be able to drive around for days.

Now, I'm perfectly fine with the fact that burning h2 produces less energy than is required to produce it. That makes total sense. What doesnt make sense is the fact that it's not really possible to get around with a tank full of fuel without another power source. This really limits the use of a h2 engine.

Hydrogen thrusters have the same problem. It's not really feasible to create a ship with just hydrogen tanks and fly any significant distance - we are talking seconds of available thrust, without a h2 generator on board.

Producing Hydrogen fuel should require large, heavy, expensive machinery, and gobble up loads of power, but that fuel should be able to keep a craft running for a decent amount of time.

Also we need smaller tanks. a light scout craft should not need a huge tank. a small 1x3 tank should give a wheeled rover a range of at least 20 miles or so. A flying craft would be more difficult to say how long it should last due to several other variables involved, but in deep space at least with no other factors, a single h2 thruster should be able to be supplied with a 1x3 tank and be able to burn at full thrust for a couple minutes before that tank is empty - again, at the cost of making it not really feasible to carry an h2 generator around on a small craft.

This would create a need for refueling stations and large carriers to tote around your smaller craft that have limited range, but still allow room for those small craft to be actually functional.