Automobiles are vehicles that are self-propelled and can carry passengers. They are usually wheeled, have four to eight tires, and run on a gasoline (petrol) engine. Automobiles are used to commute to work, travel to the store or to school, and take family vacations. The branches of engineering that deal with the design and manufacture of automobiles are called automotive engineering.

During the first half of the 20th century, the automobile revolutionized American life in many ways. It changed industry and technology by making it possible to travel great distances for business and pleasure. It helped people find jobs, places to live, and services that were not available before. It also made it easy for people to do more things in their leisure time, such as visit the countryside or go to urban areas.

The automobile also brought new laws and government requirements. These included safety features like seatbelts and highway rules. The automobile also caused environmental problems, such as pollution from exhaust and destruction of undeveloped land for roads.

Having a car means that you can reach your destination more quickly in case of an emergency. A medical emergency or a disaster could happen at any time, and having a car can save you a lot of stress by getting you to your destination safely.