It’s a sunny Sunday morning and I set out from my hotel early, armed with camera and coffee to enjoy a little independent wandering before scheduled meetings take over in the afternoon. Within a few minutes I hit a major city thruway, but instead of vehicle traffic I encounter cyclists of all shapes and ages and scores of determined joggers, all making their way down Carrera Siete. The aroma of grilled arepas, the occasional shout of a street vendor and strains of salsa or vallenato music float through the air. Remove the distinctly Latin character of the surrounding sounds and smells and this scene could be a typical Sunday in any modern metropolitan anywhere in the world, from Melbourne to Chicago. Only, perhaps surprisingly, this is Bogota, where major roads are closed each Sunday to create several miles of pedestrian and biker thruways from one end of the city to the other,...