text: Paris enforced a partical ban unpon driving to clear the glabal city ,almost 4,000 drivers were fined according to Reuters  27 people had their cars impounded for their reaction fine .Because of that congestion was down 60 percent in the captail of france ,the smog rivaled beijing ,china which is known as one of the most polluted citesbin the world. Diseal fuel was blamed ,diseal makes up 67 percent of vehicles in france while 53.3 percent are diseal engines in the western europe. The smog was cleared enough on monday for french party to recined the ban for odd numbers plates on tuesday. In colombia a program was set ,leaving the streets of the capital city devoid of traffic jams ". Its a good opportunity to take away stress and lower air pollution " , day without cars is an improvenment campagin that begun in the mid 1990's .Parks ,sports centers bloomed throughout the city ,uneven pitted sidewalks hace been replaced and so on .Recent studies suggest that americans are buyiinh fewer cars etc ..which left reserches poundering 'Has americs passed peak driving"? But americans love affair with its vehicles seemse to be cooling adjusted for population growth number of miles driven peaked in 2005 than droopend after that .Many meaures  the decrease in driving preced the downturn which is persisitinbg now that recover is under way .