Compressed air cars are well and truly on their way to mass production in India and America, among other places - although they seem to be taking their time. But the cheap, environmentally-neutral compressed air engine also lends itself to other interesting urban and industrial transport concepts like the AIRPod. Intended both as a personal 3-4 seater city commuter and as a getabout for airport, train station and municipal workers, the AIRPod is cute and easy to drive with a joystick instead of a steering wheel and pedals. The three-wheel transport weighs around the same as a touring motorcycle at 220kg, so it only needs 5 1/2 horsepower from its lightweight air engine to reach top speeds a little over 40mph. Best of all, cheap compressed air refilling will take as little as 90 seconds and cost about EU1.10 for the AIRPod's expected 220km range.