By Nick Aziz
Thursday, Sep 14th, 2006 @ 7:59 am

Spy photographers in Germany have snapped what appears to be the first ever photo of a Porsche Panamera prototype. The Panamera is a four-doour “coupe” designed to rival the Mercedes CLS and Aston Martin Rapide. So far, Porsche has only released an official sketch of the car. Since may design cues from the sketch — such as door cuts — are not carried over from the sketch, we suspect the vehicle pictured may be a test mule rather than an actual prototype. In late 2005, a Porsche spokesperson said the automaker would unveil a concept version of the car in spring 2007. At that time, we should get a good idea of how the finished car will look. Full spy shot after the jump…