1) In Greece, the European Day Without Cars is celebrated each year on September 22nd, where major city centers are closed to cars and citizens are encouraged to use public transportation, bicycles, or other non-petrol methods of transportation. 2) Students in Greece gathered information showing cars have increased 190% since 1990, and cars are the source of 80% of air pollution in Athens. 3) The students created models of a car-less city, wrote essays encouraging less car use, and drew pictures imagining cleaner cities without car emissions to showcase their support of reducing car dependency.