In twenty years there will be fewer cars in use than there are today. As technology develops, people purchasing life quality and efficiency also grow up, hence, I do not agree the statement that there will be fewer cars in use than there are today.The reasons are as follows. To begin with, unlike the previous generation who devoted themselves into work and basic necessities of life, people nowadays focus more on their leisure time. They are willing to spend money on either exercise or traveling. The thing that most critical to do those activities is car. It can be seen from the growing sales number of SUV, which is suitable for family trip, in recent years. For the next 20 years, there will only more cars be sold. Besides the consciousness of leisure life, the percentage to own a car is going up as well, for its convenience and for its icon of wealth. On the one hand, people buy an ideal car as a commute tool because they don't want to take a mass transportation with crowded passengers.On the other hand, owing a car means that one's financial level reaches to a certain degree and can afford the expanse of maintaining a car. The situation happens particularly on males, who often show to their friends about the car they just bought. As the overall economy gets better,car will definitely become a sign of compare. Perhaps some will argue that car is harmful to our environment and thus under the advocate of environmentalist, people will give up car and turn to other transportation. But there are also many new technologies trying to reduce the pollute that cars will cause. For example, hybrid car,which uses half oil and half electricity to make power, has already hit the market. We can look forward to more car-related invention that will not only improve our life but also make no harm to the earth. To sum up, cars do play an important role in modern life, for its various functions, so in my opinion, there will not be fewer cars in use than there are today.