PLMM is an electric four-wheel skateboard. It can be accelerated, decelerated and reversed by merely tilting the deck. It is equipped with four electric in-wheel hub motors and can reach high speeds of 40 km/h or more. By using two inclinometers, the centre of gravity is checked by measuring the tilt 1,000 times per second so that it is stable even when accelerating or decelerating. Its design reflects the fast, dynamic and powerful movements.