subject: Can You See Transportation Changes? [print this page] Can you find that travel is becoming easy in our lives? With technology development, safety and convenience of transportation has been improved greatly. Automobile advancement is a case in point.
For different usages, automobiles are generally categorized as cars, buses and trucks, etc. From the very start, cars are considered as luxury items while they are commonly used vehicles nowadays. It's known that most cars are driven by gas. Car drivers have to refuel them as the "food" is eaten up, or they will refuse to move. Many people complain that the gas is so expensive that one month"s gas fees are almost worth of a car. It"s also discovered that the exhaust of gas-engine cars does harm to the air, resulting in bad air quality and global warming.
Green driving powers are being developed with concern on environment. People have realized the importance of environmental protection and worked on new power applications. Electricity, in the form of battery, is used as engine power in some cars. So far, it is seen as most safe power which does not send harmful substances to the air or contribute to climate change. One problem lies in high price. Car batteries are more expensive than gas, so it can not be widely accepted. However, it"s believed the new power will have a bright prospect through development.
Except engine powers, other inventions contribute to automobile convenience. Take GPS system for example, the application makes travelling simple and safe. It has almost become an installation necessity for cars. With the tiny tools, drivers would not worry about getting lost and choose best routes on travels for GPS devices can make clear guidance with information from navigation satellites. For years" development, it tends to provide more accurate guiding information than before.
All in all, our pursuit for transportation convenience will never stop. We pursue for higher transportation efficiency and better adaptation to environment.
