DRIVING ON FREEWAY AT A CRUISE CONTROL SPEED OF 70 MPH WITHOUT ANY WARNING LIGHTS OR MALFUNCTIONS WITH THE TRUCK, WHITE SMOKE WAS NOTED FROM BEHIND THE TRUCK. SMOKE IMMEDIATELY BECAME WORSE AND TRUCK WAS PULLED OFF ON SIDE OF ROAD. SMOKE WAS NOTED COMING FROM UNDER FRONT HOOD AS WELL. DRIVER THEN SAW FLAMES COMING UP DRIVER SIDE WINDOW. DRIVER RAN FROM VEHICLE AND IT WAS CONSUMED IN FIRE. THE WHOLE VEHICLE WAS A FIRE BOMB AND DESTROYED. NO INJURY WAS SUSTAINED BY DRIVER AS OF NEXT DAY EXCEPT TO SAY SHOCK AND EMOTIONAL TRAUMA. DRIVER SIDE DOOR SWITCH FOR SAFETY RECALL OF POSSIBLE FIRE WAS DONE AND SERVICED ON APRIL 2015. TRUCK WAS IN THE SHOP THE PREVIOUS DAY FOR A TIE ROD REPAIR, OIL CHANGE, AND TIRE ROTATION. MECHANIC SAID THE TRUCK LOOKED IN GOOD SHAPE WITHOUT ANY PROBLEMS NOTED ON THE VEHICLE. I HAVE PICTURES ON MY PHONE OF A BALL OF FIRE THAT WAS THE TRUCK.