Nowdays,thankstothebenefitcausedbythepolicyofreformandopenningup,wecanseemoreandmoreprivatecarsrunningoutsideasthepeople''slivelyhoodhasimprovedramatically,Then,whatexactlydoesthepossessionofpersonalcarsbring?Inmyopnion,everythinghastwosidesaboutwhichI''mgoingtoclarifymypointofview.Ontheonehand,IcannotdenythefactthatbecomingtheownerofcarsThedriversowningtheircarsdon''thavetosqueezeroundinpublictransportationlikebusesandsubwayandtoacertainextent,cankeepthemselvesoffstorm,heavysnow,strongwindandotherawfulweather.Inaddition,theyarefreefromwaitingforbuseswithlesstimetobewasted.Whatismore,theycandrivetheirowncarstowherevertheywantandwhenevertheylike.Ontheotherhand,therealsohavedisadvantagesinowningpersonalcars.Thebasicexpenseformaintainingcarstheownershavetoaffordisoil,insuranceservice,annualcarcheck-upandtheessentialcostforaplatewhichrepresettheleagalapprovalforcarstobedrivenonroads.Inadditiontotheseexpenditureacarownerhavetopay,however,theemissiongivenoffoutoftheincreasingcarshavegreatlycontributedtotheairpolution.Allconditionsmemtionedabove,weshouldhaveanobjectivemeasurementtowardsprivatecarsandkeepoptimisminpolutioncontrol,hopingtherapiddevelopmentofcleanenergyconsumedvehicles