[AreaMan]

In 1900, Rudolf Diesel presented an engine which ran on peanut oil and wisely stated in 1912 that, "The use of vegetable oils for engine fuel may seem insignificant today. But such oils may become in the course of time as important as petroleum and the tar products of the present time".

FROM: http://pepei.pennnet.com/Articles/Article_Display.cfm?Section=CURRI&ARTICLE_ID=197473&VERSION_NUM=1&p=17

A few years ago a few people took a coast to coast trip in the U.S. in a diesel fueled only with fry oil they gathered along the way from truck stops and restaurants.

[Deguello]

"a coast to coast trip in the U.S. in a diesel fueled only with fry oil"

They could of and should of been busted for not paying state and federal taxes on fuel. People do go to jail for this offense.