text: During a car-free day in Bogota, Columbia, millions of Colombians hiked, biked, skated, and took buses to work. The purpose of this action was to control pollution and avoid traffic jams. The Day Without Cars was so effective that, it began spreading to other countires. The turnout was large, people didn't even care about the weather. There were just a bunch of people working together for a good cause. The outcome took away a lot of stress and also reduced air pollution in Columbia.