Wow: All Power Labs has converted a Honda Accord to run on trash:

We may not yet have a flux capacitor for time travel, but we do already have the equivalent of “Mr. Fusion”, which if cleverly applied, will enable you to run your car on everyday “trash”– today. This “magical” device is called a gasifier. And what it does is called gasification.

This redeployment was made possible by the gasification of waste biomass, using simple gasifiers about as complex as a traditional wood stove. These small-scale gasifiers are easily reproduced (and improved) today by DIY enthusiasts using simple hammer and wrench technology.

A video of the gasification-powered car in action:

And, see Instructables for documentation of the whole conversion. Finally, a good use for all that scrap wood piled up in my backyard…