Luca and the boys at Eurocar Blog point us to this video, featuring all the recent prototypes and other models undergoing test floggings on Germany's N rb rgring. If you look closely, you can spot the next Cadillac CTS, a Murcielago LP640, the Audi R8, Maserati coupe, and BMW 1-Series Cabrio β€” as well as the Panamera test mule everyone's been clamoring about (hint, watch for the BMW M5 in a four-wheel drift β€” 'the heck is under the hood of that thing?).

N rburgring Tests Video [Eurocar Blog]

Spy Photos: 2007 Maserati GT; Spy Photos: 2009 Porsche Panamera, Say What!?; Riding the Green Hell in an Audi R8; Spy Photos: 2008 Cadillac CTS [internal]