It is easy to explain no manual control. Google will include insurance cost into the service itself. If there is any accident, Google's insurance plan will cove

It is easy to explain no manual control. Google will include insurance cost into the service itself. If there is any accident, Google's insurance plan will cover it. If there is manual control, the insurance cost will be a mess, since you have to factor in the driving record of the person who is in the car. This alone would be a show stopper.