A thought in the back of my mind is fear of government oppression in a world without prevalent cars. If you have a car you can travel hundreds of miles with few limitations and it's particularly hard to quash this even in an oppressive state. If you only have your feet and public transit you are very limited to distance and location and tracking movements is an easy feature of the system. Things going wrong? The gove…
(As silly as I thought the movie was, the protagonist of the first Jack Reacher movie took the bus everywhere specifically so the government had no records on him, so the idea certainly isn't lost in popular culture either.)