2011 Maserati GranCabrio Sports Car The Maserati GranCabrio will make its debut on September 15 at the upcoming Frankfurt Motor Show. The Maserati GranCabrio is a four-seat convertible that promises to offer enough space for all its occupants, completes Maserati’s product line-up that now consists of three different families of models: Quattroporte, GranTurismo, GranCabrio.2011 Maserati