dear Xiao Ming

　　When it comes to cars， different people have different views. Some people think cars have a lot of advantages.In the first place， driving a car saves time. because competition is very fierce in this society ，time equals money . Secondly， people can go shopping o traveling at their spare time .

　　But ，others people suggest that cars are bad for society， such as： cars will increasing air pollution ，which will influence our life and production .Meanwhile ，cars will make the energy crisis worsen. In addition ，with the number of cars growing， plenty of new drivers don‘t abide by traffic regulation ， which leads to traffic accidents .

　　In my opinion ，we should drive our cars when our work is very busy . Meanwhile， we should reduce driving the car when short distance or having a lot of time. We should properly use modern traffic facility， only then our life will colourful