The NVI Hydrogen Generator is a device designed to save fuel, improve engine performance and provide a "green" alternative to conventional fuels like gasoline, ethanol and diesel. Also known as a Hydrogen Cell, the Generator provides better mileage which, in turn, saves gas or other fuel alternatives, while it improves engine efficiency and lengthens engine life. Anyone interested in saving money over the long haul, definitely needs the help a Hydrogen Generator can provide. Operating on the electricity provided by your vehicle's alternator, the unit actually provides "brown gas," a combination of hydrogen, oxygen and water vapor, that is inhaled by an engine's intake system resulting in substantial cost and fuel savings through improved engine efficiency. Save gas cost, save mileage and provide "green fuel" to help save the environment. It's a "Win, Win" situation for everyone concerned.