Automobiles are vehicles that use a motor to power, control and steer them. They are a very common mode of transportation and there are billions in operation around the world. The automobile has had a major impact on society because it allows people to travel long distances with ease. This opens up many work opportunities and social relationships that would not have been possible before the automobile was invented. It has also impacted how people live, creating suburbs and changing city planning. It also created industries that support the car, such as gasoline stations and repair shops.

There are some problems associated with automobiles, however. They can be dangerous if they are not driven properly and can cause injuries or death to people in traffic accidents. They can also pollute the air and make cities less livable for everyone. People can reduce the negative effects by using public transportation, such as buses, passenger trains and trams, instead of driving.

The first automobiles were steam and electric powered, but they did not have many features that we take for granted today. Karl Benz, a German engineer, invented the modern automobile in 1885. He used a four-stroke engine that burned gasoline. He was able to produce cars at his factory and sell them for a lot of money. This opened the door for other manufacturers to produce and market cars.

After Benz, Henry Ford revolutionized the way automobiles were made. He introduced the assembly line, which allowed workers to build automobiles quickly and cheaply. This allowed more people to afford to own them. In addition, he used standardized parts to keep the cost of producing each model down. This allowed automakers to offer cars at a lower price and compete with each other on quality rather than style or brand.

Modern automobiles use a variety of fuels, but gasoline is the most popular one. The fuel comes from oil, and it is a finite resource. As it is depleted, prices will go up and it will become more difficult to find. This will force car companies to design vehicles that use alternative sources of energy or to make cars that do not consume so much gas.

There are special automobiles that are designed for specific uses, such as fire engines, ambulances and patrol cars. These vehicles are designed for safety and speed, which are important in emergency situations. There are also vehicles that can carry goods, such as trucks and vans. These are useful in commercial transport and in warehouses.

There are a number of different systems that make up an automobile, but the most important is the motor. This is what makes the car run, controls the steering and turns the wheels. The motor uses a system of valves and pistons to create the combustion that runs the vehicle. In addition to the motor, there is an electrical system to provide power for lights and the ignition. There is also a brake system to stop the car when necessary.