It was a black M6...I saw it around 8:30pm at the intersection of Old Courthouse Road and Chain Bridge Road in Tysons Corner. The car was amazing, the rims were huge and the sound of the car was incredible when it took off.

Seen many of these on the road. I like it but not much to distinguish it from the regular 6's. Besides for the bumpers, wheels, and rotors. Unlike the E46 3 and M3 where everything is different (excluding the doors).