Check out
Beaver Energy.
They have a wood gas Mercury Cougar... er Beaver.
Here's a video bite from the Mother Earth Fair from a couple weekends ago.
The microphone on Chip is mine. It was still on him from me recording his seminar on the car. I still need to get that video up to YouTube!
The best part of the car is that it's actually a hybrid. It can still run on gas if you want. Just put the fuel injector fuse back in!