 The Volt concept car became the first application of the E @-@ Flex ( Voltec ) drive system with a combination of an electric motor , the same used in the Chevrolet Equinox Fuel Cell , a 16 kW · h ( 58 MJ ) lithium @-@ ion battery pack with 136 kW of peak power , and a genset consisting of a small 1 @.@ 0 L , 3 @-@ cylinder turbocharged flex @-@ fuel capable engine linked to a 53 kW ( 71 hp ) generator . General Motors called this genset an electric vehicle ( EV ) range extender . The vehicle was propelled by an electric motor with a peak output of 120 kW ( 160 hp ) delivering 236 lb ft ( 320 <unk> ) of motoring torque . The concept car featured several advanced materials from GE Automotive Plastics which allowed GM to reduce the vehicle weight up to 50 percent . 
