I'm curious if anyone has personal knowledge about HHO systems for cars? I just found out about it online (sure its been around for awhile) and am curious if it really helps vehicle mpg. If you're not aware of what it is, as I wasn't and could hardly find out WTF HHO meant, the HHO (hydrogen hydrogen oxygen) system is fundamentally a water electrolysis system under the hood of the car which puts eletricity through distilled water (breaking up the H20 into H, H, and O gas) and pumps hydrogen and oxygen into the vehicle intake and in doing so gives you better mpg and possibly a tad more power. This sounds good and fine and I've even seen some youtube videos about it but I'm not quite sure if it would be worth it for me to build one on my own. Part of my inquiry entails whether or not it is true, and (secondly) if so what procedures and materials would I need to do so? Thanks fellas.