The old Stork Club invented the idea of a club-within-a-club when it opened the Cub Room for celebrities to hide out from the hoi polloi. A regular $47,000 5-series BMW not good enough for you? How about a specially equipped M5 for $90,695? Mercedes has made this an art form with its Black Series -- special seats and trim, less weight -- layered on top of its AMG performance upgrades that hike the price of a C-class coupe to around $125,000.
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