Car moving forward should have three modes:
1) autopilot - the user need do nothing except enter destination/route and the user can be anywhere in the car, liability for accidents etc is the car manufacture
2) accident avoidance - the user is in control, but the car will not allow an accident to happen, liability for accidents etc is the car manufacture
3) manual - user is in complete control and can do damage, liability for accidents etc is the current driver
This allows for those that want to drive, to be able to drive but also has the advantage of lower accident rates and even allows for people to sleep, read and/or TXT.
I love that Tesla is pushing it forward and being loud (mistakes will happen without a doubt), Google (and others only autonomous vehicles) will have there place in taxi service, semi-trucks, etc) but for a majority the Three Modes vehicles will be a majority.
PS DUI's go away, distracted driving (TXTing, reading, eating, putting on makeup) issues go away, accidents are reduced dramatically (but will never be perfect).