The park also acts as a natural air conditioner. Because of the water and higher wind speeds, summer temperatures are 6.5o F lower than 400 meters away. Other benefits include an increase in people to the area. This is good for businesses. Air pollution is down. Land prices are up But what about the 160,000 cars that once used the highway? Some drivers use other routes, and others now use public transportation. The number of cars driving into downtown Seoul is down. The number of people using buses is up 1.4%. The number of people using the subway is up 4.3%. Taking away the highway has been very k positive. Shanghai, Tokyo, and Los Angeles are looking at the results of the park as a model for large cities that want to become greener.