Private Space?

Still learning,
Just learned that while driving in your car, leaving a space after the car in front of you is part of the "Private Space".

There are a lot of things I learned since I moved here, but that "Private Space" is the one that I never thought of, it is kind of away from human nature (mine at least) sine I drive in a hurry all the time and try to pass all cars (a bad habit I got from my old driving).
But knowing that now will sure going to make me change that habit.
I just love this country and how they are thinking of things from different angle (The human angle).