Manufacturer say it is good for a cars http://www.alibaba.com/product-gs/427589195/150kW_Brushless_PM_Motor_for_Vehicle.html another company try to sell this idea, pic 3 & 4 motor and gear box http://cn-dcmotors.en.alibaba.com/product/305331171-200530970/ELECTRIC_Motor.html what you think?