I have to assume the film was done back in the day those cars were new, or pretty close to it. Even the cap car was a 68 or 69 Olds. I did my car stuff 10 years later, things were different by then.
I worked in the gas station where most of our town cops had their personal cars serviced and tuned up. I knew most of them by their first names. The few time I actually got pulled over was a lecture time, with the cop talking to me through my car window, but most of the time those discussions took place at work a few days later. Most of our local cops and myself had a mutual agreement. I'd try not to do stupid stuff, and they would try to not have to pull me over. It worked out pretty good for me.
i worked in the local body shop, starting in 1968. i knew all of the locals, and the mutual agreement above was exactly the same !
the STUPIDEST thing i got stopped for, was heading home after a "bar fest".
as luck would have it, "Chief Earl" stopped me. he asked where i thought i was going, and i said "home".
he said he : "was going to follow me, and i better not go over 10 ^%$%$#% miles an hour !".... and if he saw me in town again that night he was : "going to lock me up and throw away the "#$@@#%$###@%%#$#@@# keys !"
as i lived a little over 1/4 of a mile out of the city limits, it was a pretty unnerving drive home, not going over the "descriptive" 10 miles an hour in the shape i was, with the Chief following me !
i made it home, parked the car, and staggered toward the house.
the Chief turned his car around, and said : "remember what i said !".........he then waved, and went back to patrol.
you sure as he!! wouldn't be treated that way today ! [and rightly so !] but back then was a different time and place............