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An automobile, motor car or car is a wheeled motor vehicle used for transporting passengers, which also carries its own engine or motor. Most definitions of the term specify that automobiles are designed to run primarily on roads, to have seating for one to eight people, to typically have four wheels, and to be constructed principally for the transport of people rather than goods...

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Car tuning is a generalized term referring to the act of improving the performance or appearance of a vehicle. For actual "tuning" in the sense of automobiles or vehicles. Most vehicles leave the factory set up for an average driver's expectations and conditions, tuning on the other hand, has become a way to personalize the characteristics of a vehicle to the owner's preference. Cars may be altered to provide better fuel economy, produce more power, or to provide better handling...

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