2009 Cadillac CTS-V on the Nurburgring

Yesterday, we brought you the first actual photos of a 2009 Cadillac CTS-V prototype. Previous photos didn't really reveal the true face of Caddy's forthcoming 500+ horsepower hotrod.

As promised, we now have some action shots of the CTS-V prototype on the Nürburgring track in Germany. So far, we have few specifics on the new V-series model. Some sources indicate it will have a 4.6-liter naturally aspirated V8, while others indicate it will use a supercharged V8. There have even been rumors it will share a powerplant with the "Blue Devil"/Stingray Corvette. Gallery after the jump...