A simple question? why are there hydrogen engines?
Hydrogen is extremely BENEFICIAL to any ICE (Internal Combustion Engine) as it causes the engine to run COOLER, SMOOTHER, QUIETER, virtually POLLUTION-FREE, with more TORQUE and greater ECONOMY! The end product is basically PURE WATER. It destroys MOST of the Emissions leaving only traces of them in your exhaust, so you would automatically pass ANY pollution test on your vehicle, with flying colors.