The movie Come to the Stable includes a jeep in the movie and on many posters about the movie. Based on how often a jeep appears on advertising literature, I thought a jeep might have played a prominent role, but after reading a movie synopsis, it doesn’t seem that way. I couldn’t find a full version of the movie online to see for myself, but there is a version on Apple TV (and likely elsewhere).
The movie features a song titled “Through the Long and Sleepless Night“, with a record jacket that includes a jeep image. It was the reason I began researching the movie:
These are posters found online: