Re: Just seeking the truth....
About the cars that run with vegetable oil...it is true. There have been many experiments here. The only problem is that the car smells of frying pan (true).
But now you can have in Brazil cars that run on BOTH gasoline and alcohol, in any proportion, or exclusively. The chip controls the fuel injection and adjusts it. Alcohol costs 50% of the price of gasoline here. and the car runs BETTER and faster. Sometimes you add some gas to lubricate the engine better.
Most cars now being sold here work this way. It is called FLEX engine. Americans, you are being fooled with this hydrogen thing.