keeping things in perspective here (staying on point)
hydrogen fuel cells do work, it's just nobody wants to use them because they cost too much up front and also to maintain.
The cost to benefit ratio is too far against them to be practical for the average consumer.
Let's not cloud up the issue with cross discussion of other means of other sources of power production. But of course we know that was the whole point of generating this discussion, right dave? ;o)
Unfortunately i think in the end even these alternative methods are going to prove to be too costly as well.