Who needs the SLR? Mercedes and AMG announced the latest in the 'Black' series yesterday, the SL65 Black. Developed by the AMG Performance Studio, this SL is powered by a 6.0 V12 bi-turbo, which delivers 670hp! O-60 is 3.9 seconds and the top speed is electronically limited to 199mph. This is mated to an AMG five speed 'Speed shift'