of us. because we do this, we are able to notice and appreciate the facial expressions -- the emotions -- of those coming towards us. and, because we are facing each other, they are able to notice our feelings at the same time.
but in a car, only rarely are we focused on on-coming traffic. instead, we are paying attention to the car in front of us. as a result, we cant see the emotional expressions of other drivers, and they cant see ours. much of the extreme emotional reactions we see with drivers comes out of their frustration at not being able to communicate immediately with those in drivers environment. 