I'm still not sure about the concept's rear quarters. I'm figuring that all that heavy camoflage on the rear is hiding some changes which were dictated by the public's reaction to the "hatchback" appearance on the concept. Most likely, the rear has been elongated to give more a trunk, hopefully they have also created a little bit of fender to distinguish the rear quarters from the roof line. The more I see the more I like the CTS Coupe.