I have a short commute but I often drive all over California on the weekends. Having well-defined points where I could trust the computer to take over would be

I have a short commute but I often drive all over California on the weekends. Having well-defined points where I could trust the computer to take over would be very useful, even if I had to manually drive certain stretches. This weekend I drove from my home in the bay area to my Dad's home in central California. I could see a very useful system that goes like this - Manually drive to the 101. - Let the car take over until I reach the exit for the 152. - Manually drive over Pacheco pass and get on the 5. - Let the car take over once I'm on the 5. - Car alerts me and I take over manual driving through a construction zone. - Car takes over again until I reach the exit for the 58. - Manually drive the rest of the way. This scenario only involves automation on two of the major N/S arteries in California, yet it would have made my drive much easier.