Water
A hydrogen engine, specifically a hydrogen internal combustion engine (ICE), uses hydrogen fuel to power an engine similar to a traditional gasoline engine. Instead of burning gasoline, it burns hydrogen, and the primary exhaust product is water. This technology is distinct from hydrogen fuel cell electric vehicles (FCEVs), which use hydrogen to generate electricity to power an electric motor.
That's called a Subsidy, it needs 'funding' aka subsidy because it's not economically viable due to sky high electricity prices caused by governments headlong dash to total renewablesA firm in Germany have come close to get the price down , but have lacked any financial backing from government's .....
London have Hydrogen Engine buses.....











