Mysterious Audi R8 caught testing

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Mystery Audi R8 GT

Audi has already showed off the updated 2013 Audi R8, which is why this test mule has us a little perplexed. With a look somewhere between the current R8 GT and Audi's GT3 racecar, it's not really clear exactly what this car is (or will be).

Our best guess is that it might be a street-legal version of the R8 GT3 possibly as a last hurrah special model for the 2012 model year. This would make sense since we can see the roll cage inside the car, and some of the exterior bits fit in with the R8 GT3's aero upgrades including the vented hood and an oversize rear wing (although not near as big as the racecar). The winglets on the front fascia are similar to the R8 GT but are obviously bigger.

Of course, this could also be a test mule for an entirely new R8 model altogether, so we'll just have to wait for Audi to drop some knowledge on us before we can say for sure. Until then, check out the spy shots. Because it never gets old watching an Audi R8 testing on the Nürburgring.