Very interesting, thank you ecoli..... ....another key comment here, back to the "Tesla Box" idea.... key comment was the question, "what do you do if the Tesla does not come out of the box?".... ...a couple ideas here, first positive idea, if the car is 100% in and does not move, and the solution requires sitting in the car, the box could have an emergency hatch which alows access to the driver side door (definately a crap situation on mars -- but merginally better here on earth)... And a negative idea, if the car is half out of the box and requires a driver.... bad situation.
So back to car port and lines.... another good point about summoning not using lines.... I know this general subject from my Robot lawnmower.... I always felt a bit bad about its reliance on burried wire emitting a radio signal. But now, with the Tesla, I wish that the company Tesla would consider the crawl, walk run, paradigm and get the "white lines" idea right first (crawl) then sensors (walk) then vision (run). I can see that they are already doing this.... Anyway, I will start with some rigid plastic material for the "white lines" so I can experiment.... What I need to do is attach a photo to make clear my particular challenge. I would like the Tesla to part itself and summon from the corner to the right in the photo. I would like it to park in the corner, front against the flying buttress, right of car tight along wall. That first structure on the right is a charging station that I use for my KIA Soul EV 2016 (177 KM range in summer, 105 KM in winter, but great car, seat cooling at well as heating in front, seat heating in back, lots of great features, fun to drive). Please let me know your design ideas...... New Tesla 3 seems to park fine in a garage. How can I get that feature to work in this case? (photo coming just now...)