Based on the CLK63 AMG, the CLK63 AMG "Black Series" is a limited-production model with a 500 hp V8 and modified suspension with a 2.8" wider track (distance between the wheels). Essentially a street-legal version of the "safety car" used at Formula 1 races, the CLK63 AMG "Black Series" sprints from 0-60 in 4.1 seconds and tops out at 186 MPH.

Source: [url=http://cars.about.com/od/autoshows/ig/2007-New-York-Auto-Show/2008-Mercedes-benz-CLK63-AMG.htm]About - News & Issues[/url]