The outgoing Jaguar sports car, the XK8, is 10 years old, and in its later years, had become a patchwork as new technologies like satellite radio, navigation and airbags had to be adapted to it. Its V8 horsepower number began with a 2 instead of a 3, putting it way behind the competition. There were new safety and emissions goals to be met. So they threw out the XK8 and replaced it with a brand new car from the ground up, the first aluminum-chassis sports car in Jaguar's six decades of production. They've changed the name, too, in the process, from XK-8 to XK 4.2.The all-new 2007 Jaguar XK 4.2 is the successor to every XK dating back to the first one in 1948 and, as such, it is Jaguar's franchise player. The XK's main competitors are the Mercedes-Benz SL, the BMW 650, and the Cadillac XLR.Click here to read more