The automotive industry comprises a wide range of companies and organizations involved in the design, development, manufacturing, marketing, selling, repairing, and modification of motor vehicles. It is one of the world's largest industries by revenue.relating to cars or the business of making, selling, or repairing cars: automotive industry/business/sector Strong, lightweight materials are being developed to improve fuel efficiency in the aerospace and automotive industries. There are different kinds of automobiles; passenger cars, cargo cars and cars for the construction of roads and buildings. Cars for racing such as F1 Grand Prix are produced with the most advanced technologies. Passenger cars are the automobiles to transport people. Taxis, buses, and private cars are passenger cars. An all-terrain vehicle (ATV) is defined as a motorized off-highway vehicle designed to travel on four low-pressure or non-pneumatic tires, having a seat designed to be straddled by the operator and handlebars for steering control. ATVs are subdivided into two types as designated by the manufacturer. An all-terrain vehicle (ATV), also known as a light utility vehicle (LUV), a quad bike or quad (if it has four wheels), as defined by the American National Standards Institute (ANSI), is a vehicle that travels on low-pressure tires, has a seat that is straddled by the operator, and has handlebars. ATVs and quad bikes are 4 wheel motorcycles, traditionally used for off-roading and sports, but are now popular as hobby vehicles and agricultural vehicles. Whether you're a first-time rider or a seasoned veteran, there are plenty of things to consider when buying your first quad bike. Just like most vehicles, most ATVs feature a combustion engine. This kind of engine runs on fuel that is mixed with air in a combustion chamber and ignited by a spark. The spark creates a small, controlled explosion that is converted to mechanical action by the piston.