Trivia: Although many realistic freeway numbers and exits mentioned over the 2-way radio are real, they were not used in the show. An unused section of the 210 freeway (close to the 118 freeway) in the San Fernando Valley that wasn't quite open to the public yet, was the location nearly always shown on the show representing whatever location is mentioned. If you see many episodes, you can see the same section of freeway always shown.
Trivia: In early episodes, the cars used were provided by British Leyland. Unfortunately, the cars were unreliable and BL took them back after each day's filming (leading to continuity problems). The producers then did a deal with Ford, who allowed them to keep the cars for as long as they needed.