World's First Fuel Cell Powered Robot

So this thing is fuel celled powered, so what. It uses like 1 litre of hydrogen every two minutes. If the new hydrogen cars are as efficient as this we'll all be stopping every 3km for a hydrogen topup. Plus my own personal hydrogen supplies are running dangerously low, so I'm keeping all the hydrogen to myself. The Fuel Cell Powered Robot looks kind of crappy and why didn't they fit it with some decent high powered weaponry, so it can go insane and attack the world.