I've already read an article about a lady who collects used vegetable oil from surrounding restaraunts, filters it, and runs it in her deisel car.

She bought a changover system, wherein she warms the engine on deisel and then switches over to the veg oil. A deisel will run on about anything when it's up to temperature.

"Liberty has never come from the government. Liberty has always come from the subjects of it. The history of liberty is a history of resistance." Woodrow Wilson