Some of these will still happen, even in a self-driving car, because of prior passengers. In fact they might be more of a problem because passengers won't have

Some of these will still happen, even in a self-driving car, because of prior passengers. In fact they might be more of a problem because passengers won't have another human in the car inhibiting their impolite or gross behavior. I look forward to Snow Crash's self-cleaning public restrooms.