Vaporizer

I was not trying to be a "downer" at all. I was trying to state that before one can even try to say its fake, you need a lot of information. I don't know the proper air fuel mixture for the best combustion with hydrogen. Regular carburetors are abt 14-1 for gasoline? 5-6ltrs a min at even a 4 to 1 mix would allow 1500rpm with a 1cu/in motor.
If I were them, I'd consider using dual feed tubes for air & fuel. Each would have a needle valve for adjusting the proper ratio. The fuel would also be tapped to go to a storage reserve tank so it didn't have to run on exactly what the cell generates. The needle valves could be adjusted simultaneously with solenoids once the correct idling point were found. This still has faults as a constant input pressure would be needed for fuel.
My best wishes for them!

My son and I watched that vid many time stopping it here & there.
My 1st question was that motor size is pretty large and I couldn't find where enough hydrogen could be made on that cart to equal the volume it would need.
I gave the benefit of a pressurized pre-charged tank, but still failed to see where enough could be made to replace what was being used.
Looking at the valve cover of the motor and the generator size, I would think the motor's displacement is greater than 1 cu/in. The latest post states the fuel cell produces 5-6ltr a min or 366.138 cu/in per minute. The motor sounds to be running far greater than 366rpm. One would need to know more specifics like air/fuel ratio, rpm and engine displacement to even start to consider it all.
I hope they have done it.