1967 Plymouth Road Runner 4 DOOR On Ebay
https://www.ebay.com/itm/1967-Plymouth-Road-Runner-4-DOOR/264661926203?

https://www.ebay.com/itm/1967-Plymouth-Road-Runner-4-DOOR/264661926203?

It's a lot more likely that he misidentified it on purpose in the hope that some Mopar guy trolling ebay might stumble across it and think "hey, that is kind of interesting" and land a buyer that wasn't even looking for it in the first place. I know that I frequently search for "Road Runner" on ebay. Never in my life have I done a search for "1967 Belvedere four-door"...So I guess if he said it was a roadrunner he would get more money for it. But in the add he did fess up to it not being a runner.
more like advertising an apple when youre selling a shovelDon’t get me wrong, I like the 4 door and it’s patina. I just don’t believe one should be advertising it an apple when you’re actually selling an orange.