You could find these at a drive-in theater. They were so common back in the day and so much fun. They are disappearing little by little. You would hook up your radio to the speakers to listen to. You were not supposed to but we all sneaked in some food. And we shouldn't say this, but I remember some of my friends smuggling people in the trunk. My drive-in theater showed 3 movies, you don't see that anymore. I just hope they don't all go away, it was really awesome memories....
Please SHARE if you remember the drive-in theaters....