text: To continue, there are advantages to limited car usage because of many different acts of transportation. In Bogota, Colombia a program is set to spread to other countries. It was called a "Car Free" day which meant that you could not use your car for a whole day. Millions of Colombians hiked, biked, skated or took buses to work during a car-free day leaving the  streets of this capital city eerily devoid of traffic jams. It was the third straight year cars have been banned with only buses and taxis permitted for the Day Without Cars in this capital city of 7 million. The goal is to promote alternative transportation and reduce smog. "It's a good opportunity to take away stress and lower air pollution," said businessman Carlos Arturo Plaza.