The contact owns a 2014 Ford Explorer. The contact stated that after refueling and had placed the vehicle in park (P) and had turned the vehicle off. The contact stated that she was at the rear of the vehicle on the passenger side by the gasoline port, she had inserted the fueling nozzle into the gas filler tube when the vehicle began to roll backward. The contact stated she pulled the fuel nozzle out of the port and then attempted to enter the vehicle through the front passenger door but was unable to get into the vehicle. The contact said that the vehicle rolled backward down the inclined gas station driveway rolled into the roadway and stopped. The contact stated that she was shaken and was not sure if the front passenger door had struck her. The contact stated that she felt pain on her right side from the right side of her face to her hip, but she had not received medical attention. The contact was asked if she had set the parking brake and she reported that she had not. The vehicle had not been taken to a dealer or independent mechanic. The vehicle was not diagnosed and was not repaired. The manufacturer was not informed. The failure mileage was approximately 111,000.