VEHICLE WAS IN MOTION, ON A COUNTRY RD. THERE WAS A SMELL, ALMOST LIKE IF WINDSHIELD WASHER FLUID SPILLS, THEN SMOKE FROM UNDER THE HOOD. THEN FLAMES ON THE RIGHT FRONT, UNDER THE HOOD. I PULLED OVER, TURNED THE CAR OFF, GRABBED MY PURSE AND RAN. 2 GOOD SAMARITANS PULLED OVER AND JUST HAPPENED TO HAVE A FIRE EXTINGUISHER AND WERE ABLE TO PUT IT OUT. THE WHOLE RIGHT HEADLIGHT WAS MELTED AWAY.