2009 porsche carrera 4 what do you think?

The German sports carmaker has released details on the all-wheel drive versions Carrera 4 and Carrera 4S, both of which are available in Coupe and Cabriolet forms. The new generation Carreras gets an electronically controlled PTM Porsche Traction Management, which replaces the former all-wheel drive with its viscous multiple-plate clutch. This system was initially developed for the 911 Turbo and modified for the Carrera 4 models.