The let me astound you even more that there also exist such things as off-road vehicles, natural roads (think of countries like SA or AUS), and that .gov cannot just bomb all it's roads away in an instant, like they could stop all trains and most flights.
But most people don’t drive off-road vehicles anyway, so redesigning cities to prioritize trains over minivans does nothing to increase the population’s dependence on government infrastructure. The minivans won’t work without the roads the government built either.