At the Detroit auto show, Dodge is showing the Challenger, a muscle car concept that draws its inspiration directly from the 1970 car. The retro-styled coupe is built on a shortened LX platform, the rear-wheel-drive chassis that underpins the Chrysler 300, Dodge Magnum, and Dodge Charger. It is powered by a 425-hp 6.1-liter V-8 linked to a manual transmission with a pistol-grip shifter. But this orange-hued coupe is more than just a reminder of Detroit's glory days. It's widely believed that this show car presages a new, production Challenger that would use an updated version of the LX platform, with (of course) Hemi V-8 power available--along with a V-6 for the price-leader model. The Challenger would come to market in 2009 and do battle with Ford's red-hot retro Mustang and (if Chevrolet decides to build it) the Chevy Camaro.