text: One of the main issues faced today is pollution because it causes diseases and illnesses, ruining the earth's population. Smog is caused by car pollution which is increasingly more common found throughout the world because of the mass amount of vehicle usage per day. Paris has banned driving on Monday's "...to clear the air of the global city". (Par. 10) Many face a 22-euro fine if not obeying by the no-driving policy. This has helped decrease congestion by 60 percent and decrease smog pollution. Diesel fuel was blamed for most of the problems in France due to the majority of diesel engine fueled vehicles. Taking away usage of vehicles minimizes this problem. This drastic change in transportation has encouraged Obama to spread limited car usage to the United States to help the greenhouse gas emissions. The U.S. is most reliable on cars for transportation. Less people in the U.S. over time have delayed on recieving their leaners permit and license, decreasing car usage. "...beneficial implications for carbon emissions and the enviorment, since transportation is the second largest source of America's emissions...". (Par. 34)