If you want a laugh, google ‘compressed air car’, LOTS of them, just none in production. I got a kick out of the 2008 article promising one would be on sale in the US by 2010:
“which runs to 35mph entirely on air, or uses a trickle of petrol to heat and compress more air to reach higher speeds up to 90mph. It’ll cost next to nothing to run (how do 30,000km service intervals sound?), have a range of up to 1000 miles, and retail for well under US$20,000”
From our Indian friends at Tata Motors, of course!