To some it may start becoming difficult to keep track of the upcoming changes in the BMW line of M cars starting with the M4, which is slated to be the coupe variant of the M3. Though, the M3 name will continue on as a sedan, which was recently caught partially camouflaged making some test runs on the Nurburgring. Hit up the exclusive video below from our friends at TeamSpeed.com and be sure to turn up your speakers to listen to the force-fed inline-6 roar while making its rounds on the ring.