I’ll tell you what I see coming (and have, for some time):

Real-time monitoring of emissions via remote sensing or via uploads from the ECU.

And while typical 20th-century literary dystopias featured top-down censorship by totalitarian governments who wanted to wanted to keep their citizens in the dark for political reasons, Bradbury alone understood that the censorship of the future would be lateral, grass-roots efforts pushed by ignorant citizens who wanted to remain ignorant and unchallenged by ideas which unsettled them.