Automobiles, also called automobiles or motor cars, are wheeled vehicles that are designed to transport passengers and goods. Almost all modern automobiles are powered by internal combustion engines, which burn fuel (petroleum, diesel or gas) to produce thrust. In addition to the engine, a car comprises a chassis, suspension, electrical equipment and service devices. Cars are manufactured by automotive companies in many countries of the world. The United States, Japan, Germany, France, Italy and South Korea are the largest manufacturers of passenger cars. The automotive industry has generated significant economic impact worldwide, and its output is one of the major contributors to global economic growth.
The development of automobiles is closely linked to the industrial revolution that swept through the early twentieth century. It sparked an economic boom that stimulated dozens of spin-off industries. The automobile also fueled an increase in personal freedom and facilitated social change, especially in the United States. People who owned cars could travel to work and shop when they wanted, not just during the hours that public transportation services operated. Families had the freedom to take vacations and explore new places. Teenagers gained independence and mobility with driving freedom, while couples benefited from the ability to carry out romantic dates on their own.
In addition, automobiles can be used for a variety of other activities including camping and hunting. There are also special automobiles for the disabled, such as those with wheelchair access. Other specialized vehicles include emergency automobiles such as fire engines, ambulances and patrol cars.
Despite the advantages of automobiles, they have a number of disadvantages. Automobiles can cause air pollution if too many of them are in use at the same time, and their combined emissions contribute to climate change. Moreover, the cost of owning and maintaining a vehicle can be high. Nonetheless, the advantages of owning a car can outweigh these negative impacts.
The first practical and marketable automobile was built in 1886 by the German inventor Carl Benz. Since then, the automobile has become a key part of the modern world. It has changed the way we live and work, and it has helped us expand our horizons to places that were once impossible to reach. Today, it is an integral part of daily life for millions of people. The car is now the primary mode of transport in most developed countries. It also helps reduce the dependence on petroleum and other fossil fuels. For the most part, though, automobiles are safe and convenient, and they have contributed to the growth of international trade. In the United States alone, there are over 23 million registered automobiles. This is the most in any country in the world.