one of our mind that it useful to human the more and more car use in daily. because it change our life becaming more express\convenient and confentable. in otherewise, it good impact from stonger commerical\production industries and have a raise to other industires. but in another opinone against, more and more to use the personaly car will creat awuful effect to our life, for example,more press to transportaion and traffec, and amount of car more than park locality, more steps need go to home.