Just wanted to say that a car mechanic friend of ours is using HHO on his newer Dodge pick-up truck and went from 12 to 19mpg. My husband was totally against the idea of it working until he took his Geo engine over there for some work and saw the guys set-up. He didn't use a kit, but built it on his own. He was using the steel plates/electrodes/distilled water, etc... Hubby came home all impressed and wanting to try it. We're going to give it a go when the engine is back in the car and running. I told him when he does, he needs to make a video diary that we can post.