My [XXX] daughter and friend were driving our F150 lariat super crew cab 3.0 deisel which to our knowledge was in excellent condition. The driver behind her frantically pulled them over as the rear underneath of the truck was on fire. They immediately pulled over and within several minutes the entire truck burned to the ground. Luckily the girls were safe, although very shaken. There were no warning lights on the dash and the smoke was behind the truck. Had their not been a car behind them on the country highway, who knows what could have happened to the girls. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)