Automobiles are vehicles that are driven on roads and streets for the purpose of transportation. They are usually powered by internal combustion engines fueled by liquid petroleum fuel such as gasoline, diesel or kerosene. Automobiles are also known as motorcars, motor cars and automobiles.
Automobiles have greatly improved human lives. They allow people to commute to work and run errands. They also make it possible to travel between cities and across the country. The modern automobile has become an essential part of daily life. People can get where they want to go more quickly, safely and comfortably than ever before. Having a car also allows them to avoid traffic congestion and avoid the stress of having to wait for someone else to drive them or take public transport.
Automakers continually strive to improve their products and keep up with their competitors. They use research and development engineers to develop and test new technology. They can also tweak existing models to make them more appealing to consumers. Some of these changes include adjusting the powertrain, interior and exterior styling, safety features and advanced technology.
Some of the negative impacts that automobiles have had on society are air pollution, climate change and depletion of natural resources like fossil fuels. The exhaust fumes from automobiles contribute to smog in large cities. They also increase the amount of greenhouse gases in the atmosphere. These gases trap sunlight and heat and cause global warming.
Many people also dislike the noise and vibration from automobiles. This is why some people choose to ride bikes or motorcycles instead. Many modern automobiles are designed to reduce this nuisance. Some of them have softer suspensions and quieter engines. Others have sound-deadening materials and acoustic insulation.