I have been reading a lot about alternate Fuels for the automobile.Is HHO the same as a Hydrogen fuel cell? I see ads that want to sell you the manual on how to convert your car to the HHO system.

Am I going for a ride if I order this manual? I know there are water systems being used to increase performance,but this HHO thing seems to be for increasing mileage.

Sitting in Austin with time on my hands.