text: First and foremost, it will help out with our air pollution. "Congestion was down 60 percent in the capital of France, after five-days of intensifying smog..."(14). The gas we use to fuel up our vehicles is polluting the enviornment when we use it. If we used Paris as an example, we can have odd and even driving days for odd and even license plates (11). That means only half the people with cars would be driving on the road each day which could alter the air pollution. Another reliable example is Bogota, once a year they have a car free day to limit the air pollution (20). Carlos Arturo Plaza believes, "[i]t's a good opportunity to take away stress and lower air pollution" (24).