Am I missing some self driving features available on newer models? My 2016 with AP1 is wonderful. The only annoyance is having to tug at the steering wheel every so often. The car is coming up on 4 years and 50,000 miles. The extended warranty was purchased. The local service center has fixed every issue quickly. My plan is to keep it until the warranty expires in 4 years unless there is a compelling reason to get a new X.