Its true that it requires more energy to separate the hydrogen from the oxygen but in contrast an alternator works backwords...( almost defies physics...) an alternator can produce a massive amount of energy/amperage with very little usage of energy- makes up for the lack/excess use of electrolysis and hydrogen..
I think most people are thinking that some of us are just burning the hydrogen... In fact, (like what i tried) i still kept the normal air intake, i just replaced the gasoline with Hydrogen and Oxygen(HHO gas from electrolysis)...
I did a little math too... with air being 21%oxygen and 78% inert nitrogen the percentage of oxygen would increase... not only simply because you are also adding more to it (HHO= a mixture of hydrogen and oxygen...) but gasoline (i dont think) has free oxygen... HHO does... the proper ratio fuel/air is 14.7/1 i believe.... with that in mind... WITH HHO, 73% of the chamber is inert nitrogen, 4 2/3% is Hydrogen, 20% is oxygen from the air and another 2 1/3% oxygen from the gas... Theoretically, and even in numbers it is definately possible... all we need is someone to take it to the next step...
One man already did... im not sure if youve all heard about Stan Meyers but he successfully ran his car 100% of water- no gasoline...
heres a link to a couple vids... id check em out...
Stanley Meyer