Automotive technology is the study of how self-propelled vehicles move and refers to the creation or design of vehicle technology and the remediation or repairs required. This involves the engine and other systems, engineering, mechanics and computer technology. Self-propelled vehicles are those automobiles, motorcycles, aircraft, boats, snowmobiles, trucks, tractors, jet skis, lawn mowers, golfcarts , etc., that con- vert their own energy supply into motive power used for propulsion.