30/09/2008 02:05. Mercedes has confirmed that McLaren will build a special-edition 722 S version of the SLR roadster.

Deliveries will start in January, and only 150 versions will be built. Prices havent been confirmed, but its a fair bet that the 722 S will be sold at a substantial price premium to the standard £346,500 SLR Roadster.

See our full gallery of SLR 722 S pictures

Mercedes is also known to be working on a hardcore, ultra-low volume SLR Speedster as it prepares to bring its relationship with McLaren to a close.

Mercedes and McLaren are set to become road-car... // Autocar