text: My conclusion to all this for all of us to take a stand and try to limit car usage in all over the world atleast for a day, or be something like the city of Vauban, Germany, in which they have banned cars in a big part of the city, known as "smart planning". As I said in the begining, cars can be a fun thing to be riding around in, but they are on of the main reasons why pollution and smog is being created and becomeing a threat to all of our sociebty of today of all over the world. So yes, this my opinion, which should aslo be yours, we all should have a serious limiting in cars before everything get out of hands and its to late. If you can ride a bike, then ride a bike. if you can go walking to your job, school, home, or anywhere, go walking. Try to avoid car usage when its really not needed, and quit being lazy and start walking.                                    In many different countries, driving and the use of motorized vehicles have decreased in the past few years. We have come to learn the cars cause pollution of the atmosphere and the creation and release of greenhouse gases. These deadly gases have led to global warming and the decrease in our atmosphere. We've learned that if we stop using cars and find other, more environmetally friendly ways of transporation, that our contribution to the pollution will decrease ten-fold.