John must not live in the same Texas in which I live. It's common etiquette: 1) You're on a 2-lane road and see a car coming up behind you. But it's not safe for him to pass you; 2) You move over to the right and drive on the shoulder; 3) Now that you've made room, the faster car can dive on; 4) You pull back onto the road behind the faster car. He thanks you by blinking his hazard lights.
You're assuming a lot here.
"Buy a car that nobody wants to steal, and you can safely leave your keys inside it."
- Confucius
1) You're on a 2-lane road and see a car coming up behind you. But it's not safe for him to pass you;
2) You move over to the right and drive on the shoulder;
3) Now that you've made room, the faster car can dive on;
4) You pull back onto the road behind the faster car. He thanks you by blinking his hazard lights.