text: moreover, the advantages of limiting car usage can be a improvement in air pollution consequences. The issues of harmful gases from cars on the run has affected issues and consequences as global warming from excessive amounts of air pollution. In source 4 paragraph 29 the author explains an advantage of less car usage for global warming by stating " president obama's ambitious goals to curb the united states 'greenhouse gas emissions , uneveiled last week ,will get a furtuitous assist from an incipient shift in america behavior ; recent studies suggest that americans are buying fewer cars , driving less and getting fewer licenses as each year goes by ." this explains how the decrease of car usage has protected the ozone layer from harmful gases from car gas, fuel, and chemicals making the issue of global warning to bennifical rates at some points . As a fact using cars may bennifit exucess for weariness and body pain although worldwide limiting car usage up to now with these improvements has only bennefit for a better place to breath air that is growing to being less harmful and a cleaner enviorment to live by decreasing newborn bacterias that can harm us. improving global warming is something we all bennifit from either now or later.