You will want to avoid passing a car when travelling up a hill as you cannot see if another car is coming in the other lane. It is also a bit dangerous to pass cars in an intersection because you are...
The shock wave all objects make as they push air out of their way to move. A truck has a substantial bow shock you can feel. The air currents you produce as you pass a desk and a piece of paper moves.
You can, but you shouldn't. Passing on the right is dangerous, and should be avoided, as it causes problems with cars merging into what should be a slower lane, while you are going faster than the...