diesel

Ran across this one today. Frankly, I'm not good enough with chemistry to say, "Yeah, this is a good move." $.46 a gallon would be great, but not if it doesn't work. Read through it. What do you think?

Finally someone does something about high gas prices!

I recently read an article about home made bio diesel made from vegetable oil. Is this something people are actually doing? Are they mixing it with petrol or using it straight?