Here's another commercial for the Sweet Pickles books for kids. This one does feature a bus, but it's not a real bus - just cardboard. Also, it doesn't have the Sweet Pickles jingle - that must have come later.
This aired on local Chicago TV on Friday, January 7th 1983.
The Museum of Classic Chicago Television - for more fun!
I have several Sweet Pickle Books listed right now. If you are interested in several or all of them, let me know and I can work with you on price and shipping.