So you are saying that if we grant our governments the awesome power of city planning (which the government already has, do you think cities are just a random collection of buildings brought up by the first person who could buy a spot of land?) what slippery slope would we go down?
Yes cars are harmful, to everyone, and they don't make a city more accessible (old people also can't drive when they start losing their sight for instance). Public transport makes cities accessible. You can live your life however you want, until you start hurting everyone else's.
