Having sat on both sides of the car salesman's desk, I can only say that fair number of customers are total jerks. They are rude, disparaging, and often feel entitled to a fantastically unrealistic discount simply because they are unloading their unwanted, worn out car on the dealer. The reality is that no dealer is going to sell anyone a car at a loss.

At various times I have sold everything from VWs to Rolls-Royces and I can tell you this: Generally speaking nice customers get a better deal, without asking for it, than the obnoxious ones who come in, throwing their weight around, and demanding unrealistic discounts.