In the walking city, there will be less cars. There will also be less pollution from cars, trains, etc. Also we wouldn't be wasting coal, gasoline, and our other natural fuel resources.
There are many benfits of having a walking city. In 1994 Federal Highway Administrator, Rodney E. Slater said "walking and bicyling can be used not only for the recreational purposes we commonly associate with these modes but also for routine transportation purposes. In addition, increasing the use and safety of bicycling and walking in America can reduce health costs and provide an improved environment for all of us."
Substituting automobiles with walking or bicycling would reduce the amount of pollution and lower the number of motor vehicles, the amount of urban traffic, and in general make comunities nicer and greener. A 1994 study done by the Federal Highway Administration showed that "more than a quarter of all travel trips are one mile (1.6 kilometers) or less, 40 percent are two miles (3.2 kilometers) or less, almost half are three miles (5 kilometers) or less, and two-thirds are five miles (8 kilometers) or less. Moreover, 53 percent of all people nationwide live less than two miles (3.2 kilometers) from the closest public transportation route, making a multimodal bicycle- or walk-transit trip an attractive possibility."
Although walking or bicycling might not be the best way to go to and from work you can get to your friends house, shop or do errands. Only 21 pecent of our travel trips involve trips to or from work.