We shouldn't. Ideally, intra-city transportation would be handled by public transport, plus a bike in some cases. Cities could (and should) be similarly interco

We shouldn't. Ideally, intra-city transportation would be handled by public transport, plus a bike in some cases. Cities could (and should) be similarly interconnected. In a sane world, cars would be niche. So one answer could be, "because the world is insane".