Over the past few years or so, air powered vehicles have been explored and dismissed, only to be explored again. A company called MDI decided they wanted to stop dismissing the idea and after a short development time they have introduced the AirPod.
Compressed air is used to power the vehicle and although it is very small, it can still seat 3 adults and 1 child. I'm not sure if the word comfortably applies in this specific case. The driver is seated at the front of the cockpit and uses only a joystick to operate the vehicle.
The passengers are seated directly behind the driver and turned to face the outside of the AirPod. Adults will sit on either side of a smaller middle seat that is reserved for the 1 child part of the seating equation.
The AirPod uses a pair of wheels mounted side by side in the front to turn the vehicle while the rear wheels provide power to the ground. Range is limited, but no official numbers have been released yet. MDI has said the vehicle will provide a perfect solution to residents of larger cities that don't have far to travel to work and want something smaller and more maneuverable.
The AirPod is set to go into production as early as spring of 2009.