Automobiles, also called motorcars, are self-propelled vehicles designed for passenger transportation on land. They usually have four wheels and an internal combustion engine fueled most often by gasoline, a liquid petroleum product.

They are a key part of modern life, providing individuals with access to jobs and services. They allow people to travel and get around easily, saving them time and money on their daily commutes or trips to shop for groceries or visit friends and family.

These automobiles are a great way to get around town, but they can also bring a variety of problems and issues with them. They can be noisy and pollute the environment, they can cause traffic jams, and they can be dangerous when driving too fast or using poor road surfaces.

The automobile was a revolutionary invention that changed the world and the way it worked. It gave people more freedom, allowed them to have more jobs and places to live, and provided new jobs and industries that grew from the demand for cars.

It also spawned a wide range of new services and leisure activities. These included motels, hotels, and restaurants as well as recreation and entertainment.

It also gave a rise to many new laws and regulations that helped protect drivers and pedestrians alike. These laws made the automobile a much safer and cleaner way to travel, but they also led to a number of social ills: air pollution, traffic congestion, road rage, and a major contribution to global climate change.