Following the release of the 2005 RX 400h, Lexus unveils its second luxury gas/electric hybrid, the 2007 GS 450h. Powering the hybrid GS is a completely new powertrain that combines a 3.5L V-6 engine with a new compact, high-output, permanent-magnet electric motor that drives the rear wheels. The GS 450h is also driven by its electric motors when starting, traveling slowly, and during low-load driving; the resulting noise, vibration, and harshness level is about half that of a conventional gasoline-powered engine.