text: A main topic now around the globe is the enviornment. Not all cars are going to kill the environment but if you put too many cars in one area it can weakin an environment, this is including cities. Cars can cause a substance called smog which is terrible for the environment or a local residence such as a city or town. As a matter of fact Paris as inforced a partial driving ban to clear the smog of its city. Beijing, China is probrobly one of smogs worst victims. It is known as one of the most polluted citys in the entire world! Sadly, cars are a huge part of the creation of smog. Smog is horrifically bad for the environment for a huge reason, and that reason is not being able to breathe.