You will never be able to buy one of these beauties, but if Saab introduces the design flair of the Aero X Concept into the next Saab 9-3 or 9-5, well, there will be no more talk of GM cutting Saab out of the action. Debuted at the 2006 Geneva Motor Show, the Saab Aero X Concept is a two-seat, all-wheel-drive concept featuring a carbon fiber body and a 400-horsepower, twin-turbocharged V6 engine. It’s set up to burn ethanol, which is GM’s latest kick, to be sure. Look for traces of the Aero X Concept in the next 9-3, slated for introduction in 2008.