Jonathan Hole, who played motel guest/suspect Roger Taylor, had a final TV role in Silhouette (1990) playing the role of "Man in Hotel".
Gene Reynolds, who plays Henry, later became a producer and was responsible for such shows as Lou Grant (1977), Room 222 (1969) and M*A*S*H (1972).
The convertible Henry is driving is a 1952 Ford Crestline Sunliner.
The car driven by the Highway Patrol officers responding to the motel robbery is a 1955 Buick, as is Dan Matthews' vehicle.