What is the point of driverless cars?

For driving across Kansas without falling asleep.

I have driven across Kansas before, to and from the Rockies, and most of the time I wondered why I needed to be there. The road is straight and flat in most places, and traffic is light. I have the car in cruise control at 70 or something, and sometimes one finger on the steering wheel to keep it from wandering. Surely a computer/robot could do that for me!