Here is a cool project some guys from US made. The school bus is custom made and run off waste vegetabale oil, pretty cool.
The Bus: A Journey Up North, is a story of some good friends doing what they do best; having fun, adventuring, and sending it on mountain bikes and kayaks. With the idea to run the bus to be more economical as well as environmentally nice, the friends converted the school bus to run off waste vegetable oil. The vacation turns out to be nothing short of the vacation of a lifetime.
Filmed, Edited, Narrated: Joey Schusler