Are you the second or third owner? 16,500 miles is a lot for most press cars.
I am sure they way they (and most, if not all manufacturers) will have packaged it up is that it was a "management car", which basically means that the manufacturer was the first name on the log book. The cars would typically be sold through the manufacturers approved used scheme, or through auctions if the condition wasn't good enough for approved used. In either case the supplying dealer wouldn't necessarily have had any idea that it was a press car, from their point of view it was much more likely to have been a finance rep, etc - which most of the stuff they sell, bread and butter stuff, probably would be.