The contact's mother owned a 2022 Ram 1500. The contact stated that her mother had noticed that there was an abnormal burning odor coming from the vehicle. The check engine warning light was illuminated. The vehicle was taken to the dealer several times. The dealer could not duplicate the failure on some occasions, and the dealer replaced the fuel injectors on other occasions; however, the failure persisted. The contact stated that while her mother was driving 60-65 MPH, the abnormal burning odor was stronger. The driver pulled into a gas station. The contact's father was occupying the front passenger seat, and the contact and her child were occupying the rear seats. The contact noticed that there was smoke coming out between the bed and the cabin of the trunk. The contact's parents exited the vehicle, and the contact ran into the gas station with her child and asked for a fire extinguisher. The gas station worker went out to extinguish the fire with the fire extinguisher while the contact called 911. The contact stated that the vehicle caught on fire, and the fire originated underneath the vehicle, between the bed and the cabin of the trunk. The contact stated that the vehicle burned from the front side of the front doors to the rear end of the trunk. The front end of the vehicle did not burn, and the engine was in good condition. The fire was extinguished by two fire department trucks. There was no injury sustained. There was no property damage. A police report was filed. T