text: Another advantage to not using your car so much is that it can clear the air and help get rid of pollution. In source two it says"... congestion was down 60 percent". This is really good because if we did that everywhere there would not be a problem. When you use you car to much the air starts to change. In source two it says" cold night and warm days caused the warmer layer of air to trap car emissions", Which as you can tell is not good.