text: In Bogota, Colombia there is a program that is set to spread to other countries, where millions of Colombians hiked, biked, skated, or took buses to work for a car-free day, leaving the large capital city devoid of traffic jams. The goal of this car-free day is to promote alternative transportation and reduce smog, the turnout was successful. Citizens of Bogota like Carlos Arturo Plaza says it's a good opprotunity to take away stress and lower air pollution. For the first time two other Colombian cities, Cali and Valledupar, joined the event. Higher authorities from other countries came to Bogota to see the event. "These people are generating a revolutionary change, and this is crossing borders" said Enrique Riera, the mayor of Asuncion, Paraguay. Car-free day started in the mid-1990's and as created the construction of 118 miles of bicycle paths, the most of any Latin American city.