Some new spy photos have appeared showing what appears to be a near production prototype of the upcoming Mercedes-Benz
SLS AMG Roadster undergoing testing at the Nurburgring
. Unlike in some previous spy shots, we're now able to catch a glimpse of the rear spoiler in action during high speed testing. The SLS AMG Roadster will be powered by the same 6.2-liter V8 as the Gullwing, with 563 hp and a 0 to 60 mph of about 4.0 seconds.