WHILE TRAVELING FROM KNOXVILLE TN.WE NOTICED THE SMELL OF GASOLINE WHILE TRAVELING ON I-75.AS WE CONTINUED ON THE SMELL WENT AWAY.WE REFUELED IN SWEETWATER TN. AND CONTINUED ON.AT A REDLIGHT IN MADISONVILLE WE NOTICED THE SMELL AGAIN.I PULLED INTO A WENDYS PARKING LOT AND CHECKED BENEATH THE HOOD.THERE WAS NO GAS SMELL OR LEAKS.WE CONTINUED ON TO HWY 68.NEAR FARNER TN. THE CAR HAD A HOT SMELL AND WITHIN A FEW SECONDS WENT UP IN FLAMES.WE PULLED ONTO A SIDE ROAD AND EXITED THE VEHICLE.THERE WAS NO WARNING LIGHTS, AND THE CAR DID NOT MISS OR SHUT OFF.NO WARNING WHATSOEVER.WE WERE ABLE TO GET OUT ONLY.FLAMES CONSUMED THE CAR IMMEDIATELY AFTER WE EXITED THE VEHICLE. *TR