> 1000 miles is around 10% of the distance most cars go in a year.

Comparing usage of the supercharger network to the total amount driven by the car in a year doesn't make much sense. You only need the supercharger network when going a long distance; otherwise, you can charge at home or perhaps at work.

Exactly. But when it's free, people do crazy things like queue for half an hour to charge at a supercharger even though they could easily charge at home. I think this is the primary motivation of the new rules, to restrict supercharger use to those actually needing it.

I heard (secondhand info and all that) that there's some taxi startup somewhere that is using all Teslas, but instead of approaching Tesla about installing superchargers for their own use[1], they decided to just use the existing public superchargers, tying them up and creating long delays for anyone else who wants to use them. So it seems that this new rule is meant to combat that type of behavior.

[1] Apparently companies can approach Tesla about installing their own private superchargers, though I don't know the details.

They're 'Tesloop', based in LA. I've seen complaints on the Tesla forums from LA area Tesla owners about how they keep hogging up the chargers. E.g Charging for Supercharging Won't Deter Local Fleet Operators

https://www.reddit.com/r/teslamotors/comments/5bonff/chargin...