We don't know that. We have a lot of people posting from 100 miles away.When there were power problems at Harris Ranch (a crucial N-S stop on I-5) a year or so ago I remember reading Tesla brought in a portable generator. I guess if it's the main east coast highway Tesla doesn't think it's as important as if it's the main west coast highway?
And the only person who was there, did so on a weekday.
For all we know, Tesla is there on the weekend with generators.