After my first day of driving around I LOVE AutoPilot on the interstate!
From the time I merged in on 24, to the 440 offramp, circling around Nashville to the West End exit.. it was a breeze, even in the rain. When I needed to change lanes, I just toss on my blinker and the car does the rest. The one spot I had to disengage was when my lane split and AutoPilot does not yet follow navigation for things like that, a feature coming in the next update. I could have avoided the disengagement by changing out of the lane before it split.
On other roads the system requires a lot more handholding. Traffic lights and stop signs are not supported yet, neither are turns. You can still get some benefit from the system, especially if you have a car in front of you so it will handle braking when the car in front of you brakes for the traffic light. For turns you just step on the brake to disengage and handle the turn, then once the lane is established by AutoPilot you are free to engage again.
The future is going to be amazing as software updates continue to refine the AutoPilot system but what is already possible is quite helpful. This is by far the best feature on an already stunning car. I can’t wait for the next update, which Elon says should be pushed out soon! :)