Not as sleek, awesome or expensive... but Ammonia fuel cells are getting pretty good these days. Ammonia is already produced across the planet as fertilizer by the ton. And it can be produced already using several processes from oil, natural gas, propane, biologicals and of course recycled sewage.
Ammonia has a higher energy density than hydrogen, is easier to store, and can be transported easily at 8-10 bars of pressure. Lastly, ammonia is the second most widely produced commodity chemical in the world.
Only downside, it's poisonous. On the upside, you can easily smell a leak at safe levels 1ppm. I think hydrogen would asphyxiate people if there was a slow leak, as it's odorless.