While dressed in a woman's nightgown Tony Curtis says he looks just like Jack Lemmon in the movie where he dresses up like a girl. Tony Curtis co-starred in that movie, Some Like it Hot, with Jack Lemmon where he also dressed up like a girl.
In her contract, Warner Bros. promised Natalie Wood a portable trailer, white cigarette holders from London, oil gardenia from Cairo, days off when she was on her menstral cycle, and a $160,000 salary for this film.
Just after entering the highway, Curly Klein (the yellow cab driver, credited as "Sylvia's Cabbie") says "See that? Nobody passes Speed Vogel." Irving "Speed" Vogel was a friend and occasional collaborator of Joseph Heller, famed author and one of the screenwriters.
At the same time, it was announced that Tony Curtis and Henry Fonda would be re-teaming for " The Confessor" , a thriller for John Frankenheimer but it was cancelled. They would however appear together again in Richard Fleischer's " The Boston Strangler ".