Shouldn't there just be a big Tesla "T" painted on the ground at the back of a Supercharger stall so you get anywhere near one of those, hit the button on the touchscreen and the car will maneuver its rump perfectly into place next to the Supercharger connector? Seems to me there could be a special "Summon" mode that you stop near the stall, unload passengers, get stuff out of the back or whatever, then click the big T and the car gets itself into those narrow bays, you walk back and plug in the connector. Bingo, no door dings from badly parked cars off-center, less time wasted waiting for other drivers, etc. At congested Supercharger sites (perish the thought!) a Tesla "Valet" could even "Summon" a person's car and it could do a mini-self-drive under very controlled conditions to arrive at the Supercharger stall from a queue of waiting cars (and all other unoccupied waiting cars could shuffle forward, and the sufficiently charged car in the Supercharger stall could be "Summon to parking space" with similar Valet-surprised mode operation.