But GM says the next-generation technology could power rear-wheel-drive cars as well, such as the Cadillac XTS concept car, which was on display at the recent Detroit auto show.
This configuration gives it all wheeldrive and also allows the ECU to either send power to or retrieve power from (in the form of regeneration) either motor to recharge the on-board battery pack -- which can also be juiced up by plugging into the wall.