When the electric vehicle is to be towed by a towing vehicle, the two vehicles are connected by a connection tool, and a drive motor prioritization control unit is connected to the communication network by a communication cable. Power from a battery is then supplied to the low voltage line by a power...http://www.google.fr/patents/US7712760?utm_source=gb-gplus-shareBrevet US7712760 - Towing device for electric vehicle
