Aston Martin Rapide Forum | rapideboard.comFor the upcoming BMW M5 competitor: the four-door Aston Martin Rapide. Only unveiled as a concept car, but will be launched in 2007. rapideboard.com
"Aston Martin turned heads at this year's Detroit auto show when it displayed a concept car called the Rapide. Meant as the flagship of the Aston Martin line, the Rapide featured a 6.0- liter V-12 engine with 480 horsepower. Aston Martin officials said at the time that if they received enough positive feedback, they would put the car in production, aiming for it to reach showrooms in about 36 months. But no decision was ever announced, and the Rapide's fate is uncertain."