 CONT: The shots of the police car rushing to Bickfords house in the  middle of the night show a 1930s model car with only one person  inside. When the car arrives at Bickfords it is a 1950s model with  two men inside. The same shot of the 30s car with one man is  repeated later in the film, but when it arrives at the riverfront it  too has changed to a late 50s car, now carrying four men.