text: Last but not least, comes the president (Barack Obamas) most valuable reason to limit car usage. Obama wants to curb the U.S greenhouse gas emissions, and by that he wants to get fewer cars on the road. In section 4 it shows that "studies suggest that americans are buying fewer cars, driving less and getting fewer licenses as each year goes by." This means that Obama's goal is prevailing. Paris came to a conclusion that they decided to ban driving due to smog. In section 2 it states that Paris air became so polluted that they enforced a parial "driving ban" to get rid of the air pollution. They blamed this problem due to the diesel fuel. They figured out that diesels make up 67% of vehicles in France, as to 53% in the rest of Western Eurpoe. In section 2 its pretty much the same reason except Bogota's goal is to "promote alternative transportation and reduce smog. The violators faced $25 fines." They figured limiting car usage was a good opportunity to take away stress and reduce air pollution. In section 4 the last paragraph tells you what Bill Ford plan was. He wanted to create cities in which "pedestrian, bicycle, private cars, commercial, and public transportation traffic are woven into a connected network to save time, onserve resources, lower emissions and improve safety."