Funny how the profit motive still works

Grows hair! Also removes warts!"

Actually that's a quote from W.C. Fields, but the claims of the inventor of the "H2N Gen" reminded me a little of snake oil, particularly the 100% pollution reduction claim. That's not possible if you treat CO2 as a pollutant.
His device is installed in cars and draws power from a car's battery to split water to produce hydrogen which is added to the intake manifold. This in turn causes more complete combustion in the engine, resulting in better mileage. Up to 94%It

If it works, we'll see it in all the new cars. If not, well, you've heard about those 100mpg carburetors that were suppressed by Big Oil.