Before the 20th century the horse provided day-to-day transportation in the United States. Trains were used only for long-distance transportation. Today the car is the most popular【C1】______of transportation in all of the United States. It has completely【C2】______the horse a means of everyday transportation. Americans use their car for【C3】______80 per cent of any【C4】______Most Americans are able to【C5】______cars. The average price of a【C6】______made car was $ 2, 050 in 1950 $ 2, 740 in 1960 and up to $ 4, 750【C7】______1975. During this period American car manufactures set about【C8】______the products and work efficiency. As a result, the yearly income of the【C9】______family increased from 1950 to 1975【C10】______than the price of cars. For this reason【C11】______a new car takes a smaller【C12】______of family's total earnings today. In 1951【C13】______it took 8. 1 months of an average family's【C14】______to pay a new car. In 1962 a new car【C15】______8. 3 of a family's annual earnings. By 1975 it only took 4. 75【C16】______income. In addition, the 1975 cars were technically【C17】______to models from previous years. The【C18】______of the automobile extends throughout the economy【C19】______the car is so important to Americans. Americans spend more money to【C20】______their cars running than on any other item. 【C1】