A car that runs on air

It sounds like a fairly tale, and maybe it is.

The people behind the company MDI has developed a car that runs on compressed air. One can drive 200-300 km on one tank. It takes a few hours to refill the tank.

No toxic emissions!
The emitted air is cold so it can be used for the car´s airconditioner.

This is as clean as the you can get providing the electricity distributor uses renewable energy sources. But you can always install solar panels on your house or why not your own rooftop wind power station. The latter gives max 1.5kW. I dunno if that is enough to charge the car in reasonable time.