I WAS DRIVING ON THE FREEWAY WHEN MY 2012 HYUNDAI SONATA BEGAN MAKING A RATTLING SOUND AND LOSE POWER AND THE ENGINE DIED. THERE WERE NO CHECK ENGINE LIGHTS, OIL LIGHTS OR OVERHEATING GAUGE INDICATIONS PRIOR TO THIS. AS I WAS PULLING TO THE SIDE OF THE FREEWAY SMOKE BEGAN COMING FROM UNDER THE HOOD. WHEN I STOPPED ON THE SIDE OF THE FREEWAY AND OPENED THE HOOD, THE BOTTOM PORTION OF THE ENGINE WAS ON FIRE AND I COULD SEE THE FLAMES COMING OUT FROM UNDERNEATH.