text: In the article, 'Car-Free Cities' it talks a lot about the advantanges of not driving a car. For example, according to the passage "Heidrun Walter, a media trainer and mother of two, as she walked verdant streets where the swish of bicycles and the chatter of wandering children drown out the occaional distant motor." This being said, you can conclude that more people are being more active. Furthermore, the passage says "Passenger cars are respondible for 12 percent of greenhouse gas emissions in Europe... and up to 50 percent in some car intensive areas in the United States." This meaning that some places in the United states gases are half of the areas pollution.