Granted you can assert it's a bit of a conspiracy theory-esque view, however I'd assert not an impossible one. I'll repeat, the more 'connected' our cars are (and let's face it, cars are increasingly becoming mobile devices) the more options available to control them centrally. Not the same thing but a bit like cars coming loaded with kit, however the end user, oops sorry driver, can't access the kit unless they pay a monthly subscription for it e.g. heated seats.A bit OTT, don't you think?
I think it's perfectly reasonable to assert in the future the country could be mapped into 'smart boundary zones' with the ability to control whether or not vehicles can enter.