> Hydrogen vehicles are just plain stupid from an efficiency stand point - where are you going to get the hydrogen exactly? Purifying it is too expensive - and since it's lighter than air - there is no economical source of hydrogen on earth. It'd be cheaper to fuel your car with coal.
No, it is expensive _today_. Which is different from saying it would be expensive at scale.
No, it is expensive _today_. Which is different from saying it would be expensive at scale.