text: in the source 3 "car-free day is spinning into a big hit in bogota" millions of colombians were biking, hiking, skated, or took buses. people would be fine 25$ if not following the law. it will help reuce the smog, the pollution. two other cities cali and valledupar have joined the event. people from other countries have came to colombia to watch this event. it is the straight year for this event. now since the event is going well more sidewalks have been made.