Maserati Quattroporte Sport GT S: A Speedier, Sportier Four-Door

This is the Maserati Quattroporte Sport GT S, the newest member of the Quattroporte lineup. The trident-emblemed brand plans to officially unveil it at next month's Detroit Auto Show. What should we expect? » 12/22/08 9:40am 12/22/08 9:40am