As pointed out by others, the problem is not burning hydrogen in a ICE. That has been proven since the 1920s. Hydrogen-fueled ICEs make power as efficiently as those using other fuels.
The problem is the amount of energy required to generate the hydrogen from water.
A couple of other unsolved problems. It rapidly diffuses through everything so there is always leakage loss. A 3000 psi metal hydride tank will bubble when soaped. Hydrogen will even sneak through U-238.
Hydrogen embrittles everything it touches.
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2000 Ford F-350 SC 4x2 6 Speed Manual
4" Slam
3.08:1 gears and Gear Vendor Overdrive
Rubber Conveyor Belt Air Dam
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