Speaking of karma . . .
About 5 years ago, I was at a 4 way stop on icy roads. The guy on my left side slid right through and bonked into the side of my POS car. The damage was superficial, on the door. We talked, I told him to forget about it, and we both went on our way.
A few months later, I was on the highway and bumped the car in front of me. It had grey government plates, so I thought "omigod, here comes the bureaucracy." The guy just looked at his bumper, which was untouched, and said, "Have a better day."
What comes around does go around, sometimes.