Car's get us where we need to go. You can say that we relie on car's. Car's have thier pro's, but also have thier con's. They have a big inpack on our atmosphere, with all the carbon dioxid they give off. Experts say that, it's a huge impediment to curret efforts to drastically reduce greenhouse gas emissions from tailpipes.... Passenger cars are responsible for 12 percent of greenhouse gas emissions in Europe.... and up tp 50 percent in some car-intensive areas in the United States. All these gases are inffecting out atmosphere. For example, PAris typically has more smog than other European capitals.... Paris had 147 micrograms of particulate matter per cubic meter compared with 114 in Brussles and 79.7 in London, Reuters found.

In Bogota, Colombia- in a program that's set to spread to other countries, millions of Colombians hiked, biked, skated or took buses to work during a car-free day. Leaving the streets of this capitla city eerily devoid to traffic jams. The program is to promote alternative transpotation and reduce smog. Programs all over the world have been started to reduce greenhouse gas emissions. New York's new bike-sharing program and its skyrocketing proliferation of car-sharing programs across the nation. Diesel fuel was blamed, since France has a tax policy that favors diesel over gasoline.

In 2006, Vanban was completed as an example of a growing trends in Europe, the United States and elswhere to separate suburban life from auto use, as a component of a movement called "smart planning" Vauban, home to 5,500 resident within a rectangular square mile, mat be the most advance expreiment in low-car suburban life. As of April 2013, the number of miles driven per person was nearly 9 percent below the peak and equal to wher the country was in January 1995. So evey body is giving up thier car for a day why cant you?