Bogota, Colombia, in the late 1990s becomes the testing ground for one of the most contested urban planning experiments in Latin America. As mayor, Enrique Penalosa strips street space away from cars and hands it to pedestrians and cyclists, building the TransMilenio bus system, hundreds of miles of bike paths, and public plazas in a city that had been organized almost entirely around automobile traffic. The film, part of PBS's e2 series and narrated by Brad Pitt, follows the reasoning behind those choices through interviews and footage of the finished projects: Penalosa's argument that a city's transportation choices are really choices about equality, since a bus lane serves far more people than a highway lane ever will. His policies made him unpopular with drivers and business owners even as they reshaped how millions of residents move through the city. The film treats Bogota as a working case study in sustainable urban design rather than a theory, showing what changes when a government decides pedestrians outrank cars.