Tata car manufacturer should be shipping it’s first car to run on compressed air within a year
the car, named OneCAT, will be very light, around 300+ kilograms, should go up to 200 kilometers on a charge with a top speed of 150 kilometers per hour
and that will cost you like 2 euros or so 
that’s nice 
a perfect car for me
it should cost around 4000 Euros, will be Euro 0 (Zero Emission Vehicle or ZEV)
you charge it in like 3 minutes with a compressor and you could do it at home, just by plugging it in
it can be combined with some liquid fuels to heat up the air and achieve more speed when driving on the freeway
with one tank of petrol you should be able to drive from east to west coast USA in the future
the air is put into a carbon fibre tank and the engine is done by a French man, Guy Negre
I hope in time we can convert our existing cars to compressed air
it looks to be much cheaper than buying/converting to an electric car
I hope this technology can be used for storing energy 
read more about it here