• In this episode of Head 2 Head presented by Tire Rack, Detroitís steroidal hammer meets Japanís savvy sword. Many car folks feel the midsize luxury sport performance sedan peaked with the E39 BMW M5. They may very well be right, but that doesnít mean carmakers are going to stop trying. In the black corner, packing a supercharged Corvette engine under its vented hood and producing a staggering 640 hp is Cadillacís third-generation CTS-V. Gone, but never to be forgotten, are the coupe, wagon, and manual transmission. However, the Alpha platform underpinning the third-generation CTS is one of the sportiest, best driving in the business. In the twinkly orange corner, complete with polarizing looks and a naturally aspirated 467 hp 5.0L V-8, sits the first-ever Lexus GS F. Since the GS debuted, we MOTOR TRENDers have been singing the carís handling praises. We just wished it had more power. Now it does! But which of the two is the better road car? Which is better on the track? Also, which has the worst navigation system? Thereís only one way to find out!