I actually built one of those contraptions (and no I didnt give anyone money for the design) just to prove to myself that my thermodynamics, physics, chemistry and most other engineering class were correct ----------- there is no free lunch. It does look very impressive though when it is generating HHO. Mine consummed 8 amps of 12v current and did not affect the GPH fuel consumption at idle or raise the idle much at all. Now I'm mad at myself for spending 1 hr making the dang thing.

Ducit Amour Hybridae
Mark Smith
Master Certifited Technician
Tempus non reparabilis fugit
"It isn't pollution that's harming the environment. It's the impurities in our air and water that are doing it."

Best Tank 35.0 MPG