The Porsche Panamera is a four-oor, four-seat sedan, currently in design stage, set to be launched in 2009. It will be front engined and rear wheel drive and powered by a modified version of the 4.5 L V-8 found in the Cayenne, equipped with the FSI system as used by Volkswagen (Porsche and Volkswagen collaborated on the Cayenne/Touareg sport utility vehicle platform). Base spec models will be engineered with a 3.6 liter V-6 found in the 2008 facelifted Cayenne, and there is even a hybrid version in the pipeline. Rumors suggest that the V-10 engine from Porsche's limited-run Carrera GT supercar may be offered as well, although this is still extremely unlikely given the expense of manufacturing the engine and that Porsche does not currently have a facility capable of producing a suitable number of the V-10 engines per year. A rumor is also around that the V-12 diesel from the Audi Q7 could make it into the Panamera.