COMPLETE BULLS.HIT

Heres why
FIRST LAW OF THERMODYNAMICS, or Newton's law of conservation of energy.

You can't create energy from nothing, it can't be created nor destroyed, just change forms. Heat engines are only 20% efficient, so internal combustion isn't a good way to convert energy to begin with, as 80% of it is lost as heat. On top of that, you're going to tax the alternator to break apart the water molecules into 2 H's and 1 O, using likely more energy than the hydrogen created could produce at 20% efficiency. For efficient power, basically only electric (batteries, fuel cell, motors) are the way to go... Thus a REAL hydrogen fuel cell car drives the wheels with an electric motor.