There are some people doing it, but the only name that I can recall is a local radio personality named Phil Valentine. He converted a Mercedes, and set up a system for converting waste cooking oil. It was called the Bio Benz. Haven't heard much about it for a while, but there's probably info about it available out there somewhere. It's worth looking into, and makes me wish I still had that old Toyota diesel truck.
Opportunity is missed by most people because it is dressed in overalls and looks like work - Edison. Tiny ad:
grow your own garden and build your own home, in Montana, for free-ish