"HHO" generators are used commercially to run torches when fuel storage is not an option. They are huge, costly (electrically run), and produce enough hydrogen and oxygen to run a torch. Even at that size and expense they do NOT produce enough gases to run even a small gas engine. If you expect the generator on your vehicle to produce enough "HHO" to run the engine you are dreaming and ill informed. It is less costly to make alcohol than it is to make "HHO". Alcohol is easier to store, less dangerous, and can be nearly as efficient as gasoline in an engine that is built to take advantage of alcohol's quirks. Vegetable oil is another fuel that can be made with less expense than "HHO". It will run in diesel engines and can be used in the wick type oil lamps. (alcohol needs a mantel type lamp to be of any lighting value.)