2009 Porsche Panamera autobahn encounter

In an impossible encounter, one half of the Full Throttle team stumbled across a still slightly disguised Porsche Panamera on an unrestricted stretch of a German autobahn in our BMW M5 chase car.

Its performance would suggest this was the flagship twin-turbocharged V8 variant as it was happily pulling away from our BMW M5 at speeds in excess of 250km/h, prompted by the sight of our camera.

Having already made its official debut at the Shanghai Motor Show it was certainly strange to see a prototype on the road, begging the question that perhaps Porsche has not yet finished its engine development.