text: In places already practicing the no car rule, environments have improved; more than pollution wise. Andrew Selsky reported of "the construction of 118 miles of bicycle paths" and  "uneven, pitted sidewalks have been replaced by broad, smooth sidewalks." These two additions of Bogota, Colombia have inspired many people to turn in their keys, and take a hike instead. Not only have these changes made people more happy, but it makes their city more beautiful and they are starting to get outdoors and see it. The author reports that "municipal authorities from other countries came to Bogota to see the event [car-free day] and were enthuriastic," amung the people visiting was the Mayor of Paraguay's capital city. When more people see the effects, they want to do the same thing. Columbia's one day event has brought about much talk in neighboring towns and even "two other Colombian cities, Calli and Valledupar, joined the event."