I went in to dealer, money in hand, to buy a specific car I knew they had in stock and that I'd already picked out. The salesman then proceeded to convince me

I went in to dealer, money in hand, to buy a specific car I knew they had in stock and that I'd already picked out. The salesman then proceeded to convince me that I actually wanted this other model which would be much better for me. Fine you've convinced me, how much for that other car. Salesman comes back a couple of minutes later and sheepishly admits they don't actually have that car in stock and won't be getting any for 4-6 weeks. I walk out without buying a car.