Maserati builds a provacative 4-door. A 400-hp V8 provides the power to the rear wheels through a transaxle mounted in the rear with the differential. A host of customization options are available for the interior. The Quattroporte intends to be sporty enough for those that want to drive, but also luxurious enough to be used as a limousine. At around $100k, the Quattroporte gives luxury buyers an appealing alternative to the German luxury sedans that dominate this segment.