An automobile is a road vehicle that runs on four wheels and transports one or more people. It can be powered by a liquid fuel like gasoline or diesel, an electric motor, or a hybrid engine that uses both gas and electricity. Unlike horses or bicycles, automobiles can be driven at relatively high speeds.
Automobiles are a vital part of society, providing many benefits to individuals and to the economy. They give people the freedom to travel, which can increase work opportunities and provide more options for where they want to live in relation to their careers. They can also save time by allowing people to travel long distances in a short amount of time, rather than having to take public transportation or depend on friends for rides.
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An automobile is a complex technical system that requires significant research and development to keep it running smoothly, efficiently, and safely. This work includes improving the body, chassis, and engine. It also involves developing new materials and components, such as electronic computers and high-strength plastics. Many of these developments are a result of environmental, safety, and fuel efficiency regulations, while others are driven by consumer demand for comfort and luxury features.