I WAS DRIVING ON A HIGHWAY AT 55 MILES/H PULLING A TRAILER WITH A LIGHT LOAD. THE TRUCK SUDDENLY WENT FROM NORMAL ENGINE SOUND TO A LOUDER AND LOUDER SOUND AND IT SLOWED DOWN AS IF I WAS BEEN DRAGGED BACKWARD. THE ENGINE SOUND FELT LIKE THE TRUCK HAD DOWN SHIFTED FROM A HIGHER TO A LOWER GEAR AND WAS BRAKING ON ITS OWN WHILE I WAS TRYING TO COMPENSATE BY GIVING MORE GAS SO THAT I COULD PULLOVER SAFELY. WITHIN A MINUTE THE TRUCK STOPPED STILL, THERE WAS SMOKE AND FIRE THAT SPREAD RAPIDLY THROUGH THE CABINE AND ENGINE. WE NEARLY ESCAPED. I WAS UNABLE TO COMPLETELY CLEAR THE TRAILER OFF THE ROAD AS THE TRUCK HAD COMPLETELY STOPPED. THE TRUCK BURNED COMPLETELY. BEFORE REPORTING THIS INCIDENT I CALLED FORD, PROVIDED MY VIN NUMBER AND ASKED WHETHER THERE HAD BEEN ANY RECENT RECALLS ON MY F150. FORD CONFIRMED THAT A RECALL (# 19S07) THAT IMPACTED MY VIN WAS ISSUED IN FEB, 2019. HOWEVER, I DO NOT REMEMBER RECEIVING ANY NOTIFICATION FROM MY FORD DEALERSHIP.