Dodge formally announced Tuesday its departure from NASCAR competition following the conclusion of the 2012 season. Its decision affects current involvement in both the Sprint Cup Series and the Nationwide Series. Dodge's plan to withdraw from NASCAR comes after Penske Racing revealed earlier this year that it is switching to Ford at the start of the 2013 campaign. Penske, which has been with Dodge since 2003, fields two Charger cars in Sprint Cup and two Challenger cars in the Nationwide series