[Christ]

So I'm not sure I understand exactly what your argument is, if there is one.

I think one effect that has been seriously overlooked that could be a use of hydrogen is pre-combustion, such as that in Honda's CVCC design, where a very fuel rich mixture (composed of hydrogen and intake air) is used to ignite the rest of the compressed charge, a very lean gasoline or diesel/intake air charge.

The fast expansion and flame front of hydrogen makes a seemingly perfect introductory fuel, wherein it's initial burn is used to ignite the remaining fuel mixture, achieving the same ends as the CVCC engine was designed to achieve, while using less fuel to do it.

I would then wonder if onboard production would be a usable method.

Of course, I probably just gave some HHO idiot scam artist another way to explain to people why his ball canning jars will get them 100% more power and over 9,000 gas mileage.