Driverless cars will be actively sold before the end of this decade. They will phase in over the following 20 years.
Recent evidence shows that the accident rate with a driverless car is far less than with a human at the wheel.
One consequence is that, if the "driver" is wearing a device such as iBeat, the car can re-route and head for the closest ER when that passenger / driver is recently clinically dead.
Sure beats calling an ambulance.
Bob