We were leaving Kerrville Tx around [XXX] on our way to Colorado for a fishing trip. We got to Colorado City Tx 3:45pm to refuel and grab a late lunch, we left at 4:30pm. We went through Snyder and Post Tx and approximately 5:45pm 1.2 miles southeast of Southland Tx, I had a warning come up on the dash saying Low Fuel Pressure and Reduced Engine Power and had smoke coming in then I pulled over asap and upon opening my door flames hit my leg and even more smoke began to fill the cab rapidly. We were fighting for our lifeâs. You could see fuel dripping/ flowing driver side under hood, location secondary fuel filter you can even see a trail on the pavement. I knew I had to move quickly and grabbed my 2 fire extinguishers and put to use and after I started throwing all combustibles and as many tools used on the ranch away from the vehicle. 6 Great Samaritans helped with 7 fire extinguisher as we made time to be able to separate truck and trailer by pulling the trailer from the back. But with 8-9 fire extinguishers did not put it out which is a serious problem, I now unfortunately know the taste of fire extinguishers and vehicle smoke. I got all combustibles and the trailer separated and I knew the truck was gone and I needed to get away, It seemed something was fueling it! It all happened so quickly. [XXX] and [XXX] was closed. The first firetruck with water showed up at 6:07pm and the cab of the truck had completely melted away. A Great Samaritan offered to haul the saved trai