I had a similar experience 14 years ago. I was deciding between a Kia and Hyundai. When I was at the Kia dealership the salesperson was telling me about all their great financing opportunities because I was pretty young at the time (21). When I told him that I didn't need a loan and was going to pay cash he was really turned off. His response was, "why are you paying cash, do you have bad credit?" I ended up not buying a Kia so it didn't go much further than that. However the disappointment on his face was obvious when I said that I didn't want a loan, even though I was seriously considering buying the car.