text: The limitations on carsare not just restricted to Europe, the Americas have also taken an intrest in reducing the pollution caused by cars. In 2002 BOGOTA, Colombia, for the third year in a row had a day completely devoid of cars. The participants, all of Bogota's 7 million citzens, used seperate means of transportation to cut the emitions released by cars, only permitting the use of buses and taxis as vehicular transportation.