Are you sure he was serious? Sounds like he was pulling your leg.
Polaroid did make a camera called a "swinger" back then, too. It had nothing, whatsoever" to do with Darts, though, and they sure as hell didn't give them away when you purchased a new Dart.
It really sounds like he was just "giving you the business", so to speak. lol
no he was dead serious !! Because I told him i didnt think that was the case ..and he went on and on about it and how he had ad's from the '72 that showed it to be true