I believe these were made for Mopar dealers. McCahill was a kick.
In one of his reviews, McCahill wrote that the ride of a 1957 Pontiac is as "smooth as a prom queen's thighs." Omg. Can you imagine if he said that today? The snowflakes and non-binaries would have an unhinged, violent meltdown. I really enjoy these old dealer promos films & the film strips with the companion record.