WHILE DRIVING ON HIGHWAY 91W, VEHICLE BEGAN TO MAKE A VERY LOUD RATTLING NOISE FROM ENGINE. ALL DASHBOARD LIGHTING BEGAN TO FLASH, THEN VEHICLE SHUT OFF. I MANAGED TO STOP IN AN EMERGENCY SECTION OF HIGHWAY. THE VEHICLE ELECTRICAL COMPONENTS TURNED ON BUT NOT THE ENGINE. I SHUT OFF THE VEHICLE COMPLETELY, CALLED TOWING SERVICE, & WHILE SPEAKING TO THE AGENT I NOTICED SMOKE COMING OUT FROM THE ENGINE AND THEN FROM INSIDE DASHBOARD. FIRE FLAMES THEN IMMEDIATELY BEGAN TO COME OUT FROM THE FRONT DRIVER-SIDE ENGINE. I EXITED THE VEHICLE THROUGH THE PASSENGER SIDE DOOR, CROSSED THE RAMP LANE, & WATCHED THE ENTIRE FRONT END VEHICLE COMPLETELY ENGULFED IN FLAMES. THE CITY OF RIVERSIDE FIRE DEPARTMENT PUT OUT THE FIRE WITH THE ASSISTANCE OF CHP.