I know that I'll take lots of flak for this, but at the risk of losing credibility with certain readers (you know who you are!), let me say I don't mind this research into hydrogen. I still strongly believe that electric cars have the brightest future, and hydrogen fuel cells may work as a good range extender. Yes, I agree that plugging in your electric car is the best solution, and for most people, a range extender will almost never be necessary. But, when it is necessary, hydrogen fuel cells are a possible source for that extra electricity. How far will you need to travel? OK... put that much extra hydrogen in the tank. You'll probably almost never need it!
What I am saying is this: Don't be too quick to write off hydrogen. Remember, when batteries were in their infancy, they would never have worked for electric cars either. Imagine a car full of acid filled glass jars!
[Source: Carnegie Mellon]