Based on the available technology and powertrain improvements, the 2007 GS 450h is all about high performance delivered as efficiently as possible. With a proven stylistic winner, a proven hybrid system and technology that sets the standard in the sport sedan class, the GS 450h is likely to be a hit. Until we drive it, questions remain about its on-road feel, including handling, braking and acceleration. That's a big wave of torque washing to the rear wheels; it will be interesting to see how the GS handles such a powerful blast.