In 1968, the Plymouth Roadrunner was new and as I drove by a dealership in Oak Cliff (southern part of Dallas, for you non-Texans) I saw my first one on a dealer's lot. I stopped, went in, offered the keys to my 2 year old Ford to a salesman, and told him I'd like to know how much difference you'd have to have to trade. That idiot asked, "Well, how much would you give?" I said, "Nope, that ain't the way it works. You get mine appraised and tell me your price, and then I'll tell you whether I'll take it or not." And he said, "Well, if you don't know how much you'd give, there's no use in me getting your trade-in appraised." I said, "OK" and walked out, drove straight across Dallas to another Plymouth dealer on the north side of Dallas, went in, and told a salesman I was looking for a Roadrunner (I had read a good bit about them in some magazines). He told me they didn't have one and didn't think there were any in Dallas yet. I told him I knew where there was one in Dallas, and where it was. He said he didn't think a dealer that had one would dealer transfer it, but he got my Ford appraised, we agreed on a price, if he could find one equipped the way I wanted, and they called the first dealer who agreed to dealer transfer it, and the salesman from the second dealership and I went after it. He asked that I wait out of sight while he went in and got the keys for the Roadrunner.
I always kind of regretted that first idiot not knowing about the sale that his stupidity lost.