With actual possession of vehicles going down, in favor of leases (or leases-to-buy) and short term rentals/"ride-sharing", and with ever more permanent monitoring, the future seems to go into a direction where you're required to have a constantly available data connection in your car back to the car company or lease company, and they will be able to remotely disable access if you don't pay up. And they will probably consider loss of such connection as "tampering" and disable the cars until it gets online again.