The Big Green Bus (a Dartmouth environmental/science project), which runs on waste vegetable oil from greasy spoons across the land, rolled into Columbus, Ohio on June 19, 2006 on its summer-long trek across the country. This video shows the bus along with the Buckeye Bullet, the worlds fastest electric car. Also shown is Ohio State's entry into the ChallengeX competition, a diesel-electric hybrid SUV which runs on biodiesel (20% soy, 80% diesel oil).