The scenes of Louisville made this movie worthwhile for me -- that and Pam Grier, of course. I had no idea Louisville was that large.
If you lived in Louisville, maybe you can comfirm that Sheba did indeed return to Chicago at the end. When she takes the taxi to the airport, I kind of expected her to turn back, and the film never showed her boarding the plane. But she's wearing different clothes in the final scene over the credits, so I assume she's back in Chicago.
One thing I loved about the Burger Chef scene was the menu with the prices. I'll have a cheeseburger for 35 cents, please. Make that two!