Some time ago on Ebay, I stumbled across someone selling a roll of film containing 1959 advertising for Plymouth. It seemed like the sort of film that would be projected picture after picture while a separate soundtrack (which I don't have) would be added. It looks like a training film to let salesmen know how to sell the next year's model car.
Here are a few scans - I imagine the dialogue would have involved a new car buyer showing his neighbor the finer points of his new purchase, even though the cars aren't all the same colour.
View attachment 1956745
View attachment 1956740
View attachment 1956741
View attachment 1956742
View attachment 1956743
View attachment 1956744
In all, there were 48 pictures on the roll. I don't think anyone else bid on it so I got it for not much more than the shipping cost.