You shouldn't be unkind to people.
Mack is driving through heavy traffic on the highway when he sees a fast-moving car quickly approaching behind him.
Mack wants to maintain his place in traffic.
Mack pulls over quickly, lets the car by, and jumps right back into his lane.
Mack refuses to pull over for the car and boxes him in so the car must follow him.
The other car continues weaving through traffic and Mack is able to continue safely.
The car driver gets upset, drives erratically, and starts shouting at Mack.