Here's a (potentially stupid) idea (or not).
What if Tesla added a paid regular level 3 charging sport to most of its supercharger stations ?
Why ? Its a great way to add even more water to the mouths of LEAF / Volt / ... owners.
It would be free publicity to those most likely to buy a Gen III Tesla, and perhaps some that might have the dough to get a Model S/X but don't believe in it. As they charge near Tesla owners, they will get the vibe...
Plus it would add an extra revenue stream to Tesla.
Just saying...