Spied: 2013 BMW M6 Gran Coupe

The excitement over the 2013 BMW M6 coupe’s debut at the Geneva Motor Show next week has drawn attention away from the other M6 that’s on the way, the M6 Gran Coupe. Not to be outshined, the four-door coupe version of the M-tuned 6 Series made an appearance in Scandinavia, ironing out any remaining details in cold-weather testing. Not much has changed since we last saw the M6 Gran Coupe, as the