text: Emisions can ahave a drastic effect on citys because, many people driving in a small area can lock the gases in the city causing smog. In Paris "[a]fter days of near-record pollution, Paris enforced a partial driving ban to clear the air ... On Monday motorist with even-numbered licence plates were ordered to leave their cars at home... the same would apply to the odds the next day" (source2). In places like this people don't like having days where they can't use there car, as shown by the "4,000 drivers [that] were fined" (source 2) But, in other places people like having a day without their car.