thats exactly what it is. These cars are sponsored by companies. Those companies pay the Car owners money to build their cars and buy tires/parts/fuel etc... In return these owners put the sponsors on the cars and on the firesuits and on the haulers. They are literally paid to advertise these companies so the companies keep paying them so they can keep racing. However these haulers arent just advertising. They also have the racecars inside. Places to look at data and have computers setup. an entire garage worth of tools and spare parts and equipment. Not just advert
