Standard in 1939 and was scrapped in  1968. It was named "Imperial State" and featured four double  bedrooms, four single compartments and two drawing rooms. The  interior of the car seen in the film is actually a set built by MGM  studios. When Cary Grant (qv) shuts the door, the wall can clearly  be seen to move since the whole thing was manufactured out of  plywood panels and painted to simulate the look of metal (including  small fake rivets).