text: Bogota , Colomia has a car free day leaving the streets emty. This was third straight year cars have been banned with only busses and taxis permitted for a day. Businessman Carlos Arturo said '' its a good opportunity to take away stress and lower air pollution''. The day without cars has started in the mid-1990s , it has 118 miles of bicyle paths for people to use. Parks and sports centers have also bloomed throughout the city . Restaurants and upscale shopping districts have cropped up. The rates of car ownership per household has come down two. If this pattern persist greenhouse gas effect will go down.