We've seen some spy shots of the 2012 Mercedes-Benz SLK AMG before, but they've always been wearing more camo than this. These two prototypes were spied testing at the Nurburgring
. We don't know what lives under the hoods of these prototypes, but AMG does not disappoint when it comes to power, so expect it to be something impressive. If we don't receive word before September, we're expecting to receive official word in Frankfurt.