This is awesome:

From the film maker:

On Sunday we spent the entire day - from 5 AM 'til nearly 5 PM - riding bicycles around the city courtesy of the Ciclovia, a weekly event in which over 70 miles of city streets are closed to traffic where residents come out to walk, bike, run, skate, recreate, picnic, and talk with family, neighbors & strangers...it is simply one of the most moving experiences I have had in my entire life.
. . .
What immediately comes to mind when I think back to our trip were the ubiquitous smiles on everyone's faces wherever we went. Nearly 1.8 million Colombians out using the Ciclovia and Recreovia to de-stress, get healthy, and connect personally with their fellow citizens. Young or old, rich or poor, pedestrian or cyclist - in Bogotá everyone loves the Ciclovia.

More importantly, it would encourage Americans to get more exercise. Given the growing obesity rates in the United States, that's no small feat.

This is a win-win idea for everyone!