text: in paris they had to ban driving because there was so much smog that they had clear nthe air. as a result the smog was clear just after one day just because half the city of paris didnt drive. in the city of bogota, colombia they ban driving one day every year to promote alternative transportation and to reduce smog. the people of bogota like the idea of using alternative transportation because it relieves the stress of driving. but for the first time two other cities decided that they wanted to participae in it so maybe one day the whole world will participate.