I found that when I listen to something interesting while driving a car, let's say an audio book or something in the radio unconscious mind seems to drive the car on autopilot.

If I'm lucky I arrive at my destination without remembering anything about the ride.

If I'm unlucky my unconscious autopilot does something stupid like taking a wrong turn or blindly following a sight to the Autobahn (but the wrong one) and I suddenly realize "I have no idea where I am" and have to fix this.

In the latter case I'm completely unable to focus on the audio book or radio any more until I'm in known terrain again.