There are many car free cities. Germany suburb life goes on without cars, Automobiles are the linchoin of suburbs. They to to say that it is a huge impediment to current efforts to drastically reduce greenhouse gas, passenger cars are responsible for 12 percent of green house gas. In Paris driving has been ban to clear the air of the global society, motorists were orderd to leave there cars at home or suffered a 31$ fine. Almost 4,000 drivers were fined and people had their cars inpound for their reaction to the fine.

Cars have been banned with only buses, taxis permitteed for the day. the goal was to promote alterenative transportation and reduce smog. Not even the rain has stopped people from participating, "its a good opportunity to take away stress and lower air pollution,' said Carlos Arturo Plaza. a day without cars is an improvement campaign that begaN in Bogota in the late  mid-1990s.

In the United States, recent studies suggest that Americans are buying fewer cars driving less and getting fewer licenses as each year goes by. The question was asked; has America passed peak driving? the United States, with its broad expanses and suburban ideals, had long been one of the world's prime cultures. But Americas love affair with its vehicles seeems to be cooling. When adjusted for popullation growth, the number of miles driven in the united states peaked in 2005 dropped steadily. Americans could not afford new cars, and the unemployment weren't going to work anyway.

There are many car free cities. mostly because of green house gasses or many other cuases. Such as stress' and air pollution cars have been banned to promote alternative transportation and reduce smog. There are been efforts in the past two decades to make cities denser and better for walking.