I was just watching a TV show called Trucks on Spike TV. The host showed a setup that is available for home use to make your own Biodiesel.
You use used cooking oil which you test with chemicals to see what has to be mixed with the cooking oil to change it to Biodiesel after it has run through a pump and valve system. It cost $.70 a gallion to make it.
Now if they only make a system to make gasoline out of used motor oil or something that will work the same and it only cost a few cents.
Boy would that put the oil companys in a spin.