text: Cars produce so much pollution in the air, its sickening to know how much they reqally produce. Can you imagine how polluted new york city may be because of so many cars, busses, etc? I think thats why a lot of states are doing the train system, to stop so much pollution and to reduce the amount of cars we use. Like florida for example are starting the "sunrail" which is a train system that will take you all the way around town. Also look at this, so many "smart" cars are coming soon and electric cars where you charge your car and then you can just go drive and not get gas. They are actually making charging stations for electeric cars now.