Thats pretty incredible, hopefully its real and takes off. I would hate something like this to get gobbled up by some big business and then just vanish.
Thats a fairly large generator as well, as with all technologies the size and power consumption can be reduced if someone dumps a bit of R&D time into it. Being how small it would need to be for an engine, the generator could be much smaller as well. I could see it being used in a traditional combustion engine, albeit a modified design but still applicable with some creativity.
Yeah, that's one question that popped into my head while I was watching this too. The problem with using hydrogen for energy is while its one of the most abundant elements on the planet, right now oil is still gives you the biggest bang for the buck in terms of how much energy we put in and how much energy it gives back out.
But yeah, how efficient that machine is in terms of energy input is the big question.