The long-running partnership between Mercedes-Benz and sports car arm of British company McLaren will not be renewed when it expires in 2009, but before it ends the two will collaborate on one final project, a speedster version of their SLR supercar. These high-resolution photographs of a prototype testing on the streets of Germany reveal a car that will please purists and collectors alike.

To replace the SLR once the current partnership with McLaren is over, the next generation of Mercedes super sports cars are currently under development by the carmakers racing arm, HWA, as well as its in-house tuner, AMG. McLaren is also reported to be moving on with its own successor to the original F1. Mercedes next flagship sports car, a new roadster called the SLC, will arrive in 2010 and will be... // CarCental