Dears

hi ,, how do u do all

i am new here,,
i want to ask that,, if many people say that HHO is scam,, and they show the mathematics and science of ENERGY , its conversion,, efficiency etc,, then, how the big companies of automobiles have built commercial cars that run on hydrogen,, and they hv put the cars in open market for selling arround, and hydrogen gas filling stations have been evolved,, can any body write few words to clarify that !
thanks