Predictive slowing down for speed limit changes
When driving in Autopilot, and the speed limit drops, it doesn't slow down until the car has passed the speed limit sign, and when it does, it does so abruptly.
In some places, it drops and police sit just past the sign waiting for speeders. If you're going over after you pass that sign, they will pull you over.
Since the car knows the speed limit everywhere (even though it's wrong in some places), it would be cool if say 100 yards before the change, the car begins slowing gradually so that it is only going 5 over when it gets to the new speed zone. This would be much better than slamming on the brakes when it passes a sign, and would feel more like how a person drives.