The heat dissipation is a very serious problem in electric vehicles, especially referring to the temperatures of batteries and fast battery chargers. Concerning this, patent proposals by BMW concern external cooling elements, with large fins that exploit the race air to dissipate the heat transmitted to them by the elements hosted inside: motor, battery or control unit. It is a solution that might be used also as heat exchanger for some liquid-cooled elements. So, it would really be bingo: on one hand the cooling, on the other hand maintaining those two opposite cylinders that are a distinguishing element for BMW.