text: From reading the sources and adding up all of the information it is vary easy to infer that we would have a lot of advantages if we didnt use cars. we would have less polloution and would be paying less for roadways.    Ever wondered how the streets of a very popullated city would look like? For example, Miami. At night Miami is full buildings that stand out in color, and on the highways you can see a whole road full of lights, the thing with these lights is that they are cars, even though they are helpful by getting us from point A to point B, they are the second highest source of pollution in the United States, that is after power plants. The only thing a city like Miami is missing at night is a sky full of bright stars, which that can be done by people not driving to everywhere they go, even if it is one or two blocks away. This whole "car-free" thing is become more and more popular all over the world.