Hydrogen vs. Battery Electric Cars

I found it a bit worrying that the energy efficiency was only one of many (seemingly) equal important points in this video. Hydrogen for personal cars make close to no sense, since the added need for renewable energy would push the complete transition to clean energy further back and destroy the planet a bit more. In Germany, for instance, there wouldn't be enough room to create the clean energy needed to create enough hydrogen if everyone switched to fuel cell cars. For bigger vehicles, like busses and trucks and someday even planes and freighters, fuel cells are the way to go, though. It's just that in a race to cut emissions energy efficiency is the most (maybe close to only) relevant factor.