Dean & Jerry did not speak to each other at all off the set, during filming.
Among the casino marquees that the boys pass, are advertisements for show headliners including Joe E. Lewis, Elvis Presley and Dean Martin and Jerry Lewis.
The shiny red convertible is a 1956 Chrysler New Yorker.
Jerry Lewis maintained that he never saw this film, because the making of it was too painful, as he and Dean Martin had already decided to end their partnership.