Cool-"Endorsed by Rudolf Diesel himself
It turns out biodiesel is not a new idea. When Rudolf Diesel introduced his signature engine at the 1900 Paris Exposition, he said two words as he started it: "Peanut oil." He'd designed his engine so farmers could grow their own fuel. Most diesel engines were indeed run on vegetable oil until the 1920s, when the petroleum industry promoted a gasoline byproduct as diesel fuel."