37 Vehicle tuning, tuning of automobile engines, tuning of motor vehicle engines, mobile vehicle tuning services, namely, repair, maintenance, and refueling; excluding services for vehicles used in mining, rock excavation, mineral exploration, drilling and construction, medical carts, carts for storing and organizing medical or pharmaceutical supplies, utility carts, service carts, flat carts, specialty carts, lab carts, computer carts, dollies, rolling carts and housekeeping carts