The wheels hide a clever feature --- watch them in action . . .

Have you ever been in trouble trying to perform a maneuver with a vehicle in a small space? Unfortunately, traditional wheels do not make it easy for drivers to change direction as they require a minimum of displacement in space. 

The American company Airtrax has developed a new design that allows a vehicle to rotate without having to move or be displaced. Look at these wheels in action, do you think this might be an innovative revolution as important as the one made by the Sumerians?