sentences:  Albers and Paffett both graduated to the factory AMG line-up in 2003 and 2004 respectively, and Paffett became the DTM champion in 2005.When the relationship between Rosberg and Mercedes ended after the 2004 season, it spent 2005 away from touring cars, while considering alternative programs.One such option, which did not come to fruition, was the possibility of running the Prodrive-built Aston Martin DBR9 GT1 car in the FIA GT Championship.