Book excerpt: This e-book details the most interesting and important characteristics of the automobiles, car maintenance, styling features, car body style, the standard classification of the cars, an history of the automobiles, introduction in the automotive industry, and the traffic code, rules and signs. An automobile, usually called a car (an old word for carriage) or a truck, is a wheeled vehicle that carries its own engine. Older terms include horseless carriage and motor car, with “motor” referring to what is now usually called the engine. It has seats for the driver and, almost without exception, for at least one passenger. The automobile was hailed as an environmental improvement over horses when it was first introduced. Before its introduction, in New York City, over 10,000 tons of manure had to be removed from the streets daily. However, in 2006 the automobile is one of the primary sources of worldwide air pollution and cause of substantial noise and health effects.