Car rental is a service that allows individuals or businesses to rent a vehicle for a short period, typically ranging from a few hours to a few weeks. Rental companies offer a variety of vehicles, such as compact cars, SUVs, and luxury cars, with options for insurance, GPS, and other add-ons. It is commonly used for travel, temporary transportation needs, or when someone doesn't own a car. The rental process involves choosing a vehicle, completing paperwork, and returning the car by the agreed-upon time.