I came across an example last night, watching old "Mod Squad" episodes on youtube.
In this episode, there is a scene at a gas station (manned by Edgar Buchanan) where Pete gets a botttle out of a machine in a small town. It can be seen at around the 31:40 mark on this video and can be seen off and on for about the next minute or so. Then once more at the 38:25 mark, again, off and on for about a minute or so.
It's painted pretty generically, and weathered appropriately. Can we get an official identification on it?
The video is here:
https://www.youtube.com/watch?v=Y79Kwrykwsg