Looks like 40 cents per minute of an idle, connected Supercharger to your Tesla will be the tool used to get people to move their cars. I LOVE this idea! I have yet to come across a full Supercharger site, though. I'm sure some Californians aren't going to be too happy, but F- them!
https://electrek.co/2016/12/16/tesla-supercharger-idle-fees/
https://electrek.co/2016/12/16/tesla-supercharger-idle-fees/