Hydrogen vs. Battery Electric Cars

The best fuel cell application I can think of right now is aircraft.   Aircraft which use up a fuel (H2) are lighter as they go.  Aircraft which use batteries are always the same weight. Secondly, aircraft are usually limited to certain spots (airports) and so the H2 infrastructure can still be effective even if it is only available at airports.  (Already, it is pretty much the only place one finds jet fuel, eh?)