Only four screws are required to mount the electric Mellow Drive under any skateboard, thus presenting a compact urban e-mobility solution. The unibody magnesium frame protects the electronic system and the swappable battery pack. Two motors hide inside the wheels, which can accelerate up to 40 km/h. The user interface is just one button, surrounded by an LED ring which indicates the state of charge, an action in progress or a safety warning. The intuitive remote device with slide control accelerates when moved forward and brakes when moved backwards. It also allows to choose between four riding modes from Rookie to Pro.