text: First of all, the most important advantage is that being car-free can stop pollution. One city that had to ban car use for a few days is Paris. Due to all the smug the action that they took is, as stated in the article titled "Paris bans driving due to smug", on monday motorists with even-numbered license plates had to leave their car at home and not use it or else they would get a fine of 22 euro, which is equivalent to 31 dollars. And the same thing had to be done for the odd-numbered plates the next day. As the article says "The smug cleared enough Monday for the ruling French party to rescind the ban for odd-numbered plates on Tuesday". This shows how much damage the cars cause in the air, in just a day there was a huge improvement in the amount of smug. It's a demonstration of how much we can help by just taking public transportation and leaving our cars for a while.