Harry Brent's car is a 1955 Ford station wagon. Leo Adams' car is a 1953 Chevy Corvette convertible.
The car seen approaching the checkpoint in the opening credits is a 1954 Lincoln Capri convertible. The two Highway Patrol cars at the checkpoint are 1955 Buicks. The car being checked at the second checkpoint is a 1956 Ford. Officer Johnson's patrol car is a 1955 Buick.
The first appearance of what would be 65 total for actor William Boyett.
This episode includes shots of several motorcycle officers and it is interesting to note that, as late as 1955, they were still wearing the old-fashioned uniform consisting of a bow tie and high-topped boots.