Too good to be true?

Check out the last question in this Q/A with Duncan Haimerl in the Hartford Courant. Speaks to some new gadgets that claim to work with hho gas & hydrogen. Seems like the dismissal may be a little quick which is understandable but then again, I think the first time you come across the idea of Aquygen or HHO Gas, it's easy to dismiss it as bunk. But then you kind of poke around a bit and learn that maybe there may be more to it. Make up your own minds. For me, until I actually get in a car with one of these gadgets and drive twice as far on a full tank of gas, then flip the unit off and drive half the distance on a full tank, I'll probably be skeptical.