Let me start off by saying that I understand conservation of energy and the laws of thermodynamics. I know you can't use water for fuel, and you can't power a vehicle soley on hydrogen produced by an onboard electrolyzer. But... I have read quite a few claims that using an onboard electrolyzer, and pumping that hydrogen into the air intake will increase the fuel mileage. The claim is that, because hydrogen "burns" very hot and very fast, it will cause the diesel fuel to burn more completely. A more complete burn would mean that less fuel would be required to perform the same amount of work. Thoughts?