I was down at one of the docks today getting a tender support from from an expensive fancy boat ( Cabo something) and I stopped at the office where they had a display for fuel cell battery chargers 

http://www.efoy.com/

I had no idea this was a thing. Oh boy it looks good but lord knows the price of them. It's a big large, not super large mind you, for our vans, but I'm betting someone sometime will pop on in instead of solar.

Alistair