3 ms·Cars cause the pollution. Cities would be cleaner if suburbanites didn't drive in.by nayuki 4y agoCars cause the pollution. Cities would be cleaner if suburbanites didn't drive in.ipaddr 4y agoCars are only a small part of the pollution problem.c-cube 4y agoThen please inform us on what causes the bulk of pollution in cities. It's certainly not metros or bicycles.