text: If they limiting car usage there's going to be less smog in the world because in the second story it stated  that, "cold nights and warm days caused the warmer layer of air to trap car emissions". That means when you keep driving your car and it cold or warm the warmer layer in earth trap the car emissions. And its hurting the earth. Also, in the second story it said that "the smog cleared enough Monday for ruling French party to rescind the ban for odd-numbered plates on tuesday". They use less car in French becuase they had ordered motorist with even-numbered license plates to leave they car at home.