text: In Bogota, Colombia they set up a program, The day without cars it's when cars are banned and only buses and taxis are permitted. Their goal is to promote alternative transportation and reduce smog. "It's a good opportunity to take away stress and lower air pollution" stated by Carlos Arturo Plaza a businessman. The day without cars is part of an improvment campaign that began in bogota in the mid-1990's. during this year's anual day without cars, authorities from others countries have can to see the event and were very pleased by it. " These people are generating a revolutionary change, and this is crossing borders" said by Enrique Riera, the major of Asunci`on, Paraguay.