It does, however, seem like the perfect medium for collecting telemetry on vehicles, so Tesla will now have a great means of tracking their vehicles locations at all times.
It already has good tracking because most people aren't living in the middle of nowhere with no cell coverage. They're not worried about you going off the grid the 1 or 2 times a year you go camping in yellowstone or whatever. If you're punching in your destination using the built-in navigation (there's no carplay/android auto), they'll know where you're going even without cell coverage.