Cars

An automobile,motor car or a car is a wheeled motor vehicle used for transporting passengers,which also carries its own motor or engine.Most definitions of the term specify that automobiles are designed primarily to run on roads,to have seating for one to eight people,to typically have four wheels and to be constructed principally for the transport of people rather than goods.However the term automobile is far from precise,because there are many cars that do similar tasks.

There are approximately 600 million passenger cars world wide.Around the world there were about 806 million cars and light trucks on the road in 2007.They burn over 260 billion US gallons gasoline and diesel full yearly.The numbers are rapidly increasing in China and India.