Sometimes when driving on Autopilot, you have to intervene or you want to take over manual control. On highways, Autopilot should automatically reenable after the intervention if you're driving between line markings on a new lane, without the need for double pulling the stick manually. This would make driving with Autopilot much more convenient.
E.g. if you habe to pass / overtake a slow driving car in front of you, you've to take manual control. There are situations where you like to do this without auto lane change, because this feature is too slow or the traffic is too dense for automatic changes. In this cases, you want Autopilot to retake control after the manual intervention.