When I get into my car, I try to avert a common occurrence, but I seldomly succeed. I start the engine and drive off. Then within minutes I drive over a branch or a bump, and I think that I have run over someone. Sometimes I think that I have caused an accident. The anxiety is so great that I usually have to turn around, often by making a U-turn. Then I drive back to the approximate location, turn around again, and then retrace my track. This ensures me that I have not damaged any property or, worse yet, injured or killed someone. This sometimes goes on and on until I finally reach my destination.