Automobiles are self-propelled vehicles that carry passengers and typically have four wheels. They are powered by an internal combustion engine fueled most often with gasoline, although some have electric or steam engines. The term automobile is derived from the Latin words for “self-moving.” Automobiles have made modern life seem nearly inconceivable without them, and they are among the most widely used of all manufactured goods.

Pros: The primary advantage of having an automobile is that it provides the freedom to travel when and where you choose, eliminating the need for schedules and relying on others’ schedules or routes. Owning a car also allows you to save time, as you no longer have to wait for the bus or worry about getting up in time to catch your ride to work or class. Cars can also be a good value in rural areas where public transportation is scarce or nonexistent. Additionally, owning a car is a valuable asset in the event of an emergency, as you can call on your vehicle to get you to your destination quickly and easily.

Cons: The major drawback to owning an automobile is that it can be a significant source of pollution and greenhouse gases. Many automobiles run on gasoline, which produces carbon dioxide and other pollutants when burned to power the motor. In addition, the fuel consumption of cars is responsible for 27 percent of all U.S. greenhouse gas emissions, according to the United States Environmental Protection Agency. If you drive a newer car, which is more efficient than older models, and make sure to maintain it properly, you can limit the impact of your driving on the environment.

Special automobiles are designed for specific jobs, such as crane vehicles at construction sites and fork-lift vehicles in warehouses. Other specialty cars include fire engines, ambulances and patrol vehicles. In general, special vehicles are designed for safety and convenience, such as passenger cars that can accommodate multiple people, SUVs that are built to transport both passengers and cargo, and vans that offer more storage space than sedans.

The development of the automobile reflects a long-standing predisposition in many parts of the world, especially the United States, toward personal freedom of movement and action. It also reflects the availability of cheap raw materials, the absence of tariff barriers between states, and a tradition of industrial manufacturing that was well established by the 1920s. The mass-production techniques introduced by American automaker Henry Ford helped to bring the price of an automobile down until it was affordable to middle-class families.

While having an automobile is convenient, it can be dangerous if you don’t follow the rules of the road. There are many reckless drivers out there who can cause accidents. In addition, most automobiles run on gasoline, which causes air pollution and drains the dwindling world oil supply. Nevertheless, the convenience of having your own car can outweigh the risks if you take care to follow traffic laws and maintain your vehicle in good condition.