A car commerce service device that enables ordering and payment of goods via a kiosk in a vehicle and a method of its operation are disclosed. According to the present invention, if a predetermined vehicle is close to a kiosk device installed in a sales floor, the vehicle is automatically recognized by interlocking with the vehicle, and a specific product is ordered via the kiosk device. By presenting a car commerce service device capable of receiving payment information from the kiosk device, authenticating the payment information, and then completing payment processing for the price of the goods, and how to operate the goods. And it can assist the driver of the vehicle to conveniently order and purchase the goods he / she desires in the vehicle through the kiosk device without the need for a separate sales floor staff for payment. [Selection diagram] Fig. 1
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