This is a turbo diesel F250 Ford Truck which caught on fire and was completely destroyed while on the interstate in VA. Our safely was very much at risk as the truck was fully engulfed in flames within minutes. We were able to pull off the side of the highway and get ourselves and the dog out of the cabin just before it would have been impossible to do so. Complete total loss; we do not know at this time what the cause of the fire was; there were no warning lamps, messages on the dash to alert us. The driver happened to notice some smoke coming from the hood and quickly pulled over to check to see what might be going on. Within seconds, the hood started to buckle as the fire raged under the hood and we were fortunate to be able to have pulled over as quickly as we did. We lost everything inside the truck including all the camping gear, etc that was in the bed. The front of our trailer that we were pulling was also heavily damaged. Very very frightening event and we are so thankful that we were able to escape without harm, other than some scratches, minor cuts as we frantically tried to help stop the flames with an extinguisher we had onboard our trailer we were pulling.