An engineer has promised that within a year he will start selling a car for in-town driving that runs on compressed air and produces no emissions at all. The tanks on the OneCAT can be filled with air from a compressor in just three minutes. (BBC report)
It’s a clever idea, it can also mix in fuel if you want to – to use them together in the engine. For short trips you can run on nothing but air. I know you could not hear them coming – but could you imagine the power of the horn on that thing! lol