The Rolls-Royce used in this movie was a pale blue 1931 Phantom II Barker Sedanca de Ville, which MGM technicians covered with twenty coats of yellow paint; a few coats of black were added to the top of the hood, the roof, and the wings.
The winding mountain road on which Gerda Millett (Ingrid Bergman) and Davich (Omar Sharif) head to Yugoslavia was also the location for another car scene that same year: the race between James Bond's Aston-Martin and a white convertible Mustang in Goldfinger (1964).
Moira Lister (Lady Angela St. Simeon) was infuriated when Sir Rex Harrison (Lord Frinton) insisted that most of her lines be cut, and they were.
In October 2003, the Chicago Tribune reported that the yellow Rolls-Royce is owned by Neal Kirkham of Saratoga, California.
First credited theatrical movie of Art Carney (Joey Friedlander). He appeared uncredited in Pot o' Gold (1941).