Automobiles are motor vehicles designed for use on public roads to carry passengers or cargo. The modern automobile has four wheels and uses an internal combustion engine powered by gasoline, a liquid petroleum product. Other sources of power for cars include diesel, kerosene and electricity. Some manufacturers design their vehicles for off-road use, requiring rugged systems and high resistance to overloads and extreme operating conditions. Others focus on passenger comfort and high-speed handling.
Having your own car provides freedom of movement and the ability to reach destinations quickly without waiting for a friend or taxi. The vehicle can also save you time and money on travel, since it can reduce your reliance on public transport services. For people who work long hours, having a car can make it easier to reach their workplaces. It can also help you avoid costly traffic delays.
In addition, an automobile is a good investment for people who are planning to buy one or two homes. It can be used as a commuter vehicle or to carry children to school and activities. Moreover, it can be used as an emergency mode of transportation when the need arises.
Automakers produce a variety of automobiles for the mass market, ranging from small compact models to large SUVs. The best automobiles are dependable and fuel-efficient. They are also safe, have an attractive appearance and a comfortable interior. The design should allow for unobstructed all-around visibility to increase safety and improve driving performance. The body should also be lightweight and aesthetically pleasing.
The technological building blocks of the modern automobile date back to the late 1600s, when Dutch scientist Christiaan Huygens invented a type of internal combustion engine that could be fueled by gunpowder. However, it was not until the early 1900s that the modern automobile came into widespread use. The automotive industry exploded and dozens of new businesses opened, including roadside diners that served quintessential American foods such as hamburgers, french fries and milkshakes.
Today, automobiles are an integral part of the global economy. In the United States alone, there are over three trillion miles (five trillion kilometres) traveled each year by passenger cars. This enormous amount of traffic can lead to congestion and air pollution. The emission of greenhouse gases from burning fossil fuels is another concern. However, most drivers can limit their greenhouse emissions by using a fuel-efficient car and by keeping it properly maintained.