Run your car on water

http://www.runyourcarwithwater.com/?hop=watertt Let me know if you get it working.

Our easy conversion guide will show you how to use electricity from your car's battery to separate water into a gas called HHO (2 Hydrogen + 1 Oxygen). HHO, also called Brown's Gas or Hydroxy, burns smoothly and provides significant energy - while the end product is just H2O! HHO provides the atomic power of Hydrogen, while maintaining the stability of water.

and where does the energy in the car's battery come from???