text: In source three: "Car-free day is spinning into a big hit in Bogota" also demonstartes the positiveaspects of limited car usage. Even buissness man Carlos Arturo Plaza is talking about it, "It's a good opportunity to take away stress and lower air pollution." Colombia's way to reduce pollution and the smog in the air is by promoting alternative transportation. If people decide to go against the day of no cars in the street, they will be faced with $25 fines. It was such a positive outcome that two more cities other than Bogota decided to join, Cali and Valledupar, joined the event. But throughout time Enrique Riera, the mayor of Asuncion,Paraguay commented "these people are generating a revolutionary change, and this is crossing borders." This campaign began in Bogota in the mid-1990s. this event has dramatically cut traffic; and new restrants and upscale shopping districts have cropped up.