I've been thinking about future cars a lot, and my conclusion is that a battery + fuel cell hybrid car is the way to go. If you have a 100 mile battery and a medium/small sized fuel cell you can do almost all daily driving on battery power and never have to fill up with hydrogen. For road trips you could fill up with hydrogen to maintain highway speeds (which really only requires about 20KW). The battery serves as a high power source for accelerating and climbing mountains along with accepting regen power. For most people you would almost never have to go to a hydrogen station. This means hydrogen stations could be far less numerous than current gas stations (more like Supercharger layout...along travel corridors). Imagine a Model S with a fuel cell for a moment and what it would be like to own. You could have a smaller, lighter 40kWh battery to reduce cost. Thoughts?