It is hard to say whether it is a roller for normal people or an auxiliary action tool for people with disabilities. Actually, how are you? This is the Volkswagen Roller, a four-wheeler, with a balance between the two functions.

　　With the now very fashionable balance car slightly different, it is divided into two, each one armed each one. The main wheel has no wheels, the rear wheels are retractable and are supported by the landing gear of the aircraft, before and after the start. Taxiing, rear wheel put away, each foot only need to control the wheel without the main wheel. Each roller has a hard shoe cover like a skate, the foot can be set into the sail.

　　Hope that every person can not act as ordinary people, can achieve the wind as the wind teleport, like, under the foot of the wind and fire wheel.