Car gasoline is made up of a bunch of different grades of gasoline. If these grades aren't all present, will it work right? Does the machine work well enough to make enough electricity from a generator run off the gasoline it produces to produce more gasoline? Can it produce diesel fuel? One of the major problems that car people ignore is the engine oil that is vaporized into the air. It is harming the health of loads of people, and they don't even realize it.