"Hemp car was an alternative-fuel project car that utilized hemp biodiesel for fuel. Industrial hemp would be an economical fuel if hemp were legal to cultivate in the United States. Industrial hemp has no psychoactive properties and is not a drug. Hemp Car demonstrates the concept of hemp fuels on a national level and promotes the reformation of current law."[via ShitHappens]
News and information about Biodiesel & alternative fuels.
The HempCar folks are evangelizing industrial hemp as a biodiesel source: