I just had a test drive of a new 2017 Model X P100D. As part of the test drive I asked the Tesla rep to demonstrate the self-parking feature on my own garage. It wasn't that smooth. First of all it required being lined up very well. Without lining it up, it almost hit the wall (we had to stop it). Second when it was lined up, it struggled with the threshold (there is a slight lip of maybe 8 mm when you enter the garage which is designed to prevent rain water coming into the garage). The Tesla would stop when the front wheels hit the lip. It would then require the sales guy to turn the car off and on again to restart the process. It cleared the lip after about 10 attempts. On this basis it would take about 5 minutes to park the car in the garage using the self park feature. IS there a solution to this issue?