An automobile is a four-wheeled passenger vehicle designed to operate on ordinary roads and typically powered by an internal combustion engine using a volatile fuel. It has a chassis, bodywork, control systems and service devices, as well as an engine that may be gasoline (carburetor internal combustion), diesel, electric, gas turbine or any other kind of motorized propulsion device.
Automobiles were invented in the late 1800s and rapidly developed into one of the most important parts of modern life. They enable people to travel much more quickly and conveniently than walking or riding a bicycle. They have also greatly expanded the freedom of human beings and created many new industries and businesses.
The automobile industry is a vital part of the American economy, providing jobs for millions of Americans. The United States is the world leader in auto production and manufacturing. In addition to generating billions of dollars in paychecks, auto manufacturers contribute to America’s global leadership in innovation, technology and advanced engineering.
An automobile is a complex, high-tech system of subsystems that have evolved from breakthroughs in existing technologies and from new technologies such as electronic computers and advanced alloys of steel and nonferrous metals. Research and development engineers work to improve the body, chassis, engine, transmission, drivetrain, electrical equipment, safety systems and emissions-control systems of cars to keep them competitive and meet consumer demands. Cars are available in a variety of styles and configurations to suit a wide range of tastes and budgets.