I.Background Information

An automobile,autocar,motor car or car is a wheeled motor vehicle used for transporting passengers,which also carries its own engine or motor.Most definitions of the term specify that automobiles are designed to run primarily 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.It was estimated in 2010 that the number of automobiles had risen to over 1 billion vehicles,with 500 million reached in 1986.The numbers are increasing rapidly,especially in China and India.