BMW 6 Series GranCoupe

2013 BMW M6 Gran Coupe – Mercedes-Benz CLS 63 AMG rival on the way

BMW is planning a 2013 BMW M6 Gran Coupe to rival the Mercedes-Benz CLS 65 AMG. Spy photographers from around the world have caught prototypes out on the streets testing. (rendered speculation only, by 6post.com)...