BMW 6 Series GranCoupe screen capture

It looks like BMW is out to broaden the 6 Series range. A spy videographer managed to lay lenses on a very camouflaged version of the big 6 with two extra doors. Specifics on the 6 Series GranCoupe are sparse at the moment, though odds are that the suits at BMW are taking aim at the Mercedes-Benz CLS-Class with the new model. Does BMW need yet another sedan in its mix? More importantly, does the world need another coupe-like four door? All we can say is that the world doesn't need bourbon, either, but it sure makes the place a little more interesting.

The same can be said for vehicles with limited niche appeal. At this point, your guess is as good as ours when it comes to the vehicle's launch date, but given that engineers are already logging miles on public streets, we wouldn't put the 6 Series GranCoupe more than two years from production. Hit the jump to check out the full video for yourself.