General Motors plans to build its own electric motors for hybrid and electric vehicles. GM has been getting electric motors for those vehicles from suppliers, but wants to make the motors in-house to lower costs and improve quality and reliability. GM said it will invest more than $246 million to build electric motors. GM designed and built electric motors will debut in 2013 on rear-wheel-drive, two-mode hybrid vehicles, but eventually they could be placed in all-electric and fuel-cell cars. This is not the first time GM has built electric motors. It built them for its EV1 electric car in the mid-1990s, and some of the engineers of that car worked on the new motors.