300字英语作文 in twenty years there will be fewer cars

300字英语作文 in twenty years there will be fewer cars
300字英语作文
in twenty years there will be fewer cars in use than there are today （求这篇文章的范文）

Topic: In twenty years, there will be fewer cars are in use than there are today.
No one can neglect the contribution of cars in people’s life in 20th century. However, I think cars face the problem to be reduced in the next 20 years just because we overuse them today.
First, in past half century, crude oil exploitation is dramatically grown which makes the energy crisis concerning all facilities which cost fuel. Car takes a considerable part of using fuel. Nowadays people are pursuing to find other substitute for gas. however, we find that it's hard to make it efficient and economic because of limited technology. Since it's a long period to develop applicable gas substitute, we think reducing cars and using bicycles and taking public transportation such as buses and trains could be a temporary replacement because there is less cost of fuel per capita when people take public transportation, comparing with individual cars.
Second, fewer cars can urge a greener earth since environmental pollution is seen as a worldwide topic. Scientists predict that the sea level would rise over one meter after fifty years and a series of cities on the seashore could be immerged in one hundred years due to greenhouse effect which is caused by excessive emission of carbon dioxides. To solve this problem, we must limit the quantities of cars whose exhaust gas ranks second place in omission of greenhouse gas, right after industrial exhaust.
Lastly, cars are initially used to server people's lives, but we can observe that you would hardly reach your destination on time by a car if you live in a megapolis. Traffic problem is negatively influence our lives indeed. If you read news, then you find how people deal with this issue. For example, people in London pay an extra while they are entering in the center by car. How is the situation in Beijing? The answer is your car can drive only the day of even numbers or uneven. What's more, ninety percent of people in Tokyo take subway to their offices and leave their cars at home. Thus, I assert that cars will be fewer, and public transportation will develop fast instead.
To sum up, I confidently believe cars are gradually becoming fewer in twenty years than today because the problems of energy crisis, environment pollution and traffic jam.