SLK Safety car last used in 2004/2005 I believe. All AMG cars are made into F1 safety cars, then they decide on which they are going to use and when. Main safety car is driven by Bernd Maylander and to drive it you have to hold a full F1 Supercar License, not something a lot of people have
I've driven one of the C63 Medical cars (not at race time) and it was a truly awesome experience, the sound was unbelievable, tuned to just shy of 500 bhp IIRC