 When the car's speed becomes steady again, the drivetrain will return torque to the rear wheels.The AWD system will also transfer torque to the front wheels if the system detects loss of traction.This technology was first used in the 1989 Nissan Skyline GT-R, and has since been used in subsequent Skylines, and other vehicles in Japan and overseas, including the Nissan Bluebird, and Nissan Stagea.