Comment Re:With the best will in the world... (Score 1) 486
Of course the big question is how efficient is the process? Is it more efficient than just using the electricity to charge up batteries in an electric car for example?
TFA says 70%, then you get about 30% out of the engine, so the answer is no, but it trades that off against faster refuelling, longer range, and ability to use existing infrastructure rather than starting from scratch.