That may be true in theory, but it's more likely no one is going to care about your ideas. "Interesting ideas, but we pay you to bring the load from A to B, now get back to work."
I've actually been thinking about this. Seems like a lot of local jobs require a CDL (post office, parks department, bus driver, etc). How was your experience? It seems intimidating, but lots of people do those jobs, so must not be as bad as I think.