Dorsey Keaton plays a relatively groundbreaking role (for 1957) as a female deputy sheriff.
After the shootout "The Criminal" (William Flaherty) tells Lieutenant Matthews (Broderick Crawford) he has "one (bullet) left". The suspect was carrying a Luger pistol which has an eight round magazine (plus one in the chamber to start with). This means the suspect fired eight shots, all of which missed.
John Colter's vehicle is a 1957 Ford Custom 300 4 door Sedan. "The Criminal" is driving a 1957 Plymouth Belvedere Convertible Coupe. "The Criminal" is hiding by a station wagon in the carport next to the Colter's motel room. That vehicle is a 1957 Chevrolet Bel Air Townsman Wagon.