Greasy rider two dudes, one fry-oil-powered car, and a cross-country search for a greener future

Describes the cross-country odyssey of a freelance journalist and his college buddy in a dilapidated 1985 Mercedes diesel station wagon powered on vegetable oil collected from restaurant grease and dumpsters along the way, detailing their visits to Google's solar-powered headquarters, the National Ethanol Council, wind turbines in Minnesota, and other alternative energy hotspots.