text: Of course, adding the last two reasons together makes for another very important factor in all of this: everyone's general health. Both stress and high concentrations of smog can do a toll on one's body and the reduction of cars, once again, helps to reduce this terrible down-sides to the easy transportation option. If it must be described as "emissions ... are choking cities" (Source 1), then why not be a bit more concerned. Air pollution can affect those with pre-existing respitory issues and stress can be a deciding factor in how effient and well a person can function. Stress on the road can lead to unsafe driving and a worse performance at work, school, or any other task-oriented location that many go to with the aid of a car.