Hydrogen vs. Battery Electric Cars

Around 11:41 you mentioned that if electric grid was down you could refuel hydrogen cars. Didn't you consider that you might need electricity to have those H2 pumps PUMPING H2 into the car? And, if electric grid is down, handling payments (or other background services that are networked) could be challenging due to all networks that need electricity to be powered. 

I might be interested how would a hybrid HBEV (hydrogen battery electric vehicle) work. I'd install a smaller battery to handle, let's say 150 km (I'm using SI units), a weeks worth of normal driving so you'd have to charge those batteries once a week, but also a H2 tank to either recharge batteries during the night it there wasn't a possibility to charge overnight or directly use H2 to power up those electric motor that make wheels spin. By making a hybrid we could also collect some of the braking energy that might not be collected in pure HEVs. Just a thought...