alt Hacker NewsPart of what has made modern EVs successful in the wider market is the connected navigation system that knows your battery level, current consumption, planned navigation route, and what charging stations are available along the way.
To have a decent travel experience in an EV you'd likely at least need this data ported out to your phone via an OBD adapter or CarPlay / Android Auto integration with an in-car infotainment display.
Connecting via ODB? Come on. The car does not need any of that built into it. You can connect an app on your phone to handle all of that and just use the screen as a display. There is no need for a car to have a cellular connection just to give this functionality. That would also prevent the car from being able to communicate with the mother ship. If there's an update, have the app do that as well.