Comment Re:A so-called "Hydrogen Economy" is petroleum fue (Score 1) 559
While I agree that Hydrogen is a poor fuel source (especially in an ice-fuel cells would be better, but still not great) the storage issues are overcome pretty simply. You can get the density way up by using a metal Hydride or a similar storage matrix. This brings your density WAY up and makes the storage completely safe. Of course using a metal it is pretty heavy.... You can read about it here (http://en.wikipedia.org/wiki/Hydrogen_storage).
The biggest problem with Hydrogen actually occurs on the production side. Right now it can be produced with off peak power, though if everyone had a hydrogen vehicle, this wouldnt be a reasonable answer(and batteries would still be cheaper and better). The only way to get the cost of producing Hydrogen down to where it is actually competitive is to extract it from petrol in the cracking process-which is where the largest majority hydrogen we use today comes from.
This has a lot of very obvious downsides, and until a new scalable process is invented, I will hedge my bets on batteries, fly wheels etc.