If one has driven a car over many years, as I have, nearly all reactions have become automatic. One does not think about what to do. Nearly all the driving technique is deeply buried in a machine-like unconscious. This being so, a large area of the conscious mind is left free for thinking. And what do people think of when they drive? On short trips perhaps of arrival at a destination or memory of events at the place of departure. But there is left, particularly on very long trips, a large area for daydreaming or even, God help us, for thought.
