Nowadays,cars become the most popular transportation in the world.And almost each family has a car .It seems that cars are regarded as the perfect choice.However,I have different opinion.
Of course,it is very convenient to drive cars for a ride.For a short distance ,driving cars can be very fast,and can save much more time than walking or riding bikes.As for a long distance,actually going by train or even plane is the best way.But if you want to save money,or you just meet the busy-traffic time,you can also travel by car. In a way, cars can help lose a lot of pressure of the railway and flight departments、especially on holiday.
However, cars may cause some problems. As the number of cars is increasing ,the traffic gets busier and the streets become much more crowded. Besides, a large number of car accidents happen every year.On another hand, cars need gas to run.And the amout of the gas on the earth is sure to get less.What’s worse,cars can affect the environment. The smoke they give out pollutes the air, and the noises they produce disturb our daily lives.How terrible！
So, we must use cars properly, and try to think out some good solutions to solve the problems they cause.