I'm in the luxury car industry and I can say that the "celebrity-owned" cars fetch approximately $0 in premium in the marketplace. Dealers will certainly (try

I'm in the luxury car industry and I can say that the "celebrity-owned" cars fetch approximately $0 in premium in the marketplace. Dealers will certainly (try to) use that fact in their marketing, but the cars are such commodities anyway (particularly the SL55, of which there are TONS out there) that nobody, in the end, really cares who owned the car as long as it looks and runs like it's supposed to.