On secondary roads, no autopilot if you want to go more than 5 mph over the speed limit. While that may sound prudent, the normal flow of traffic is often faster than this. Using autopilot should not require you to hold up traffic. Thus, autopilot has become nearly useless on secondary roads. This seems like a new software feature. I have also had autopilot suddenly cut back my speed on interstate highways for no apparent reason. The usefulness and functionality of autopilot seems to be gradually cut back. Very disappointing. Mosel S 90D, 2016.