I WAS DRIVING MY CAR WHEN THE ENGINE SOUNDED SOMETHING SIMILAR TO IS IF I HAD A MISFIRE. I STARTED SLOWING DOWN BY THE TIME I GOT TO ABOUT 5 MILES AN HOUR SMOKE STARTED COMING THROUGH THE VENTS. OPEN THE HOOD AND THERE WAS A FIRE BETWEEN THE BACK OF THE ENGINE IN THE FIREWALL. WITHIN 15 MINUTES THE CAR COMPLETELY BURNED DOWN. IT IS UNKNOWN WHAT CAUSED THIS SO FAR.