We are using a SMALL amount of Hydrogen, compared to Hydrogen cars. We don't drive on Hydrogen - we're only interested in Hydrogen for the purpose of boosting your poorly burning gasoline. Those small amounts of Hydrogen (more correctly Brown's gas) and water vapor COOL DOWN the engine and cause other effects such as less vibration, cleaning old carbon deposits, etc. The overall effect, in the long run, is less maintenance, less breakdowns, not more. Most people are interested in saving right now at the gas pump, and that is understandable, however if they want it or not the benefits of less pollution and less maintenance are there to enjoy as well.