The actors, crew, director, producers and writers actually drank at the bar that was in the film, and then filmed the last scene afterwards.
The woman walking the dog is not the same woman that was in the sky with the bum. The woman in the sky was a stand in (it was the director's mother) because the actress who played the woman walking the dog had moved out of state.
There is a credit that says "Featuring music by Rumble Box" but the editor's editing computer became corrupt and the files were not recoverable and the music never made it into the film. Also with that happening the credits were not able to be altered either.