now a we are getting richer, more and more people are buying peronal car.i think owning a car can make it eay for people to go out and a car i much more comfortable than bue,bike and motorbike. but a car will do harm to the environment and if more and more people have car, the treet will be very buy all the time,it difficult for people to go acro the road,and the more car,the more accident. o when chooing a car,you hould conider if you really need a car.