The Tesla vehicles have their own connector design (they don't use the standard IEEE one). The best reason I can come up with for doing this is that the car co

The Tesla vehicles have their own connector design (they don't use the standard IEEE one). The best reason I can come up with for doing this is that the car communicates charging conditions to the station so it can regulate current flow, and the standard connector doesn't allow that. When you buy a Model S, you get about 3 different adapters so you can plug in somewhere other than their own charger. Will Tesla license this design to the other car makers? They may have offered to, but Nissan/GM/etc are probably thinking why pay Tesla when they get the IEEE design "for free".