Which Alternative Fuel Are You Most Excited About?

We've been talking an awful lot for the past few days about Honda's FCX Clarity. OK, fine — I've been talking a lot about it. Still, I filled up my car today to the tune of $3.56 a gallon — which is whack — and those numbers don't look like they are headed down any time soon. Oil is over $100 a barrel. The UN says that global warming is about to start torturing poor people. Game theorists are predicting that $7 a gas will lead to the end of society as we know it. That said, what are you putting your faith into? Is internal combustion still the way to go? Batteries? Alien tech? Bicycles? What? I've swallowed the Clarity Kool-Aid, just so you all know. Go Hindenburg.