Automobiles are wheeled motor vehicles designed primarily for passenger transportation and typically propelled by an internal combustion engine powered by a volatile fuel. An automobile consists of multiple subsystems that are designed to fulfill specific design functions such as passenger comfort, fuel efficiency and vehicle stability. The modern automobile is a highly complex technical system that has evolved through breakthroughs in various technologies including electronic computers, high strength and lightweight materials, alloys of steel and nonferrous metals, and advanced systems for the manufacture and assembly of automobile components.

Cars have become a major part of the modern world and are an essential means of transport in many developed nations. Unlike other forms of transportation, such as trains or airplanes, automobiles are highly accessible and provide door-to-door transportation on demand. However, the use of automobiles has also had several negative impacts on society. Automobiles are expensive to purchase and maintain, and they can have a significant impact on the environment and traffic congestion. In addition, the use of cars can lead to a decreased quality of life for people in countries with high rates of automobile ownership.

The invention of the automobile was one of the greatest inventions in human history. It changed the way people work, live, and play. It gave people a sense of freedom and allowed them to travel long distances. The automobile also influenced the development of cities, since it created a need for services such as gas stations and fast food restaurants.

Karl Benz invented the first gasoline-powered automobile in 1885. He was followed by other inventors and engineers who improved upon his design. However, it was Henry Ford who revolutionized the automobile industry by developing the assembly line. He was able to increase production and lower the price of the automobile, making it more affordable for middle class families. The automobile paved the way for women to be able to work and drive at a time when this was not an option. It also helped women to vote at a time when this was not an opportunity for most of them.

Today, there are over 590 million automobiles in use worldwide. Most are operated by private individuals. The average American drives more than three trillion miles a year. The automobile is a vital component of the world economy, facilitating commerce and providing access to jobs and services. Its benefits include convenience and personal freedom, but it also has drawbacks such as increased air pollution, traffic congestion, and dependence on dwindling oil reserves. It is important to weigh the benefits of owning a car against its associated costs, which can include purchasing, insurance, maintenance, and parking expenses. In some situations or locations, it may be unsafe to use public transportation and having a car can provide a level of safety that is not available with other forms of transport. It can also save time, allowing people to go on shopping trips or visit friends and family more quickly.