When I took my previous BMW (328i) in for scheduled service a few months back at the BMW Dealership I purchased it from the salesperson who sold it to me saw me in the lobby and asked me if I might be interested in upgrading to a 335i (I had purchased my 328i three years earlier from him). I told him that I was interested in upgrading to a used M3, at which point he told me he had two on the lot. I asked if I could test drive one, to which he replied that it would only be possible after agreeing on a price and securing financing. I told him I'd look elsewhere then.
Fast forward to this past Friday, I purchased my first M3 (2010 Coupe), from another dealer, of course!