This "Bio-Bus" is a regular school bus that has been converted to run on waste vegetable oil. Students from Middlebury College in Middlebury, Vermont took this across America, educating high-schools students about bio-fuels and the effects of conventional fossil-fuels on the atmosphere. Rumor has it, that this bus was adopted by the blue-grass band "Hot Buttered-Rum", and spent a few years touring California after the Middlebury crew was done with it. When the diesel engine was invented- it was originally intended to run on renewable vegetable oil, perhaps its time we got back to that idea.