Not counting mine and the one a neighbor has about 10 houses down in our subdivision...
I see at least one a day on my commute (about 15 miles each way) ...
They are pretty popular here in the Northern VA, DC area. Have yet to see a Z8 on the road and only a few 4.6 X5s (Don't flame me... I know that neither of these are Ms) ...
By the way... The Sterling VA BMW dealer has an Alpina Z8 on the floor under covers...
Do all Z8's have neon turn signals?
Bob