text: , has a Day Without Cars and it has already spread to two other cities, Cali and Valledupar. "It's a good opportunity to take away stress and lower air pollution," said businessman Carlos Arturo Plaza while riding a two-seat bike with his wife. Most people participate, and the rain doesn't stop them. Parks and sports centers also have been getting business, aswell as the sidewalks being replaced with new and smooth ones. As a result, new businesses have popped up.