But what about the 160,000 cars that once the used 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 positive. Shanghai, Tokyo, and L Los Angeles are looking at the results of the park as a model for large cities that want to become greener.