Actually this reminded me when I was driving toward such a small town via local freeway. There was a car that visibly tried to upset drivers driving slow when they tried to pass it they sped up. After observing it for a while I noticed there was a cop car driving in front. As soon as the freeway ended and transitioned into residential area the cop car drove into first parking lot and went the opposite way back to freeway, the car that tried to upset drivers followed them and did the same maneuver. At that point it was clear they were working together.