I WAS DRIVING MY 2015 KIA SOUL ON MY NORMAL ROUTE TO WORK ON 4/5/18. IT WAS A DARK, CLEAR MORNING ON A BUSY HIGHWAY. I WAS MOVING WITH TRAFFIC AT APPROXIMATELY 60 MPH. AT JUST ABOUT 5:30 A.M., THE VEHICLE MADE A NOISE AND LOST ACCELERATION. I WAS ABLE TO GET TO THE SIDE OF THE HIGHWAY AND PARK THE VEHICLE. I WAS PARKED FOR APPROXIMATELY 3 MINUTES WHEN I SAW SMOKE AND FLAMES COMING FROM THE ENGINE. I EXITED THE VEHICLE. SHORTLY THEREAFTER, THE VEHICLE WAS FULLY ENGULFED IN FLAMES. NO OTHER PERSONS OR VEHICLES WERE INVOLVED IN THIS INCIDENT. I PURCHASED THE VEHICLE NEW AND IT HAD HAD NO SIGNIFICANT MECHANICAL WORK IN THE 2 YEARS THAT I OWNED IT, JUST NORMAL OIL CHANGES AND A COUPLE OF SAFETY RECALLS. NEITHER THE FIREFIGHTER ON THE SCENE, NOR THE INSURANCE ADJUSTER, WERE ABLE TO DETERMINE THE CAUSE OF THE FIRE, ONLY THAT IT STARTED IN THE ENGINE.