This car is very aerodynamic because of the long tunnel below the car. By adding this tunnel the front surface is reduced by 20% resulting in less air-resistence. Every wheel has got its own electrical engine and can steer, so 4-wheel drive, 4 -wheel steering. The car can easily be changed in the apporiate shape. When travelling with 2 persons the roof stays in tghe in-position but when travelling with 4 persons the roof (and the 2 extra seats) can slide backwards. Using this system means you can alwasy choose easily the best fitting car for that moment.