WE WERE DRIVING TO THE AIRPORT, CAME OUT OF CONSTRUCTION ONTO UPHILL PART OF HIGHWAY. I WAS ACCELERATING AND HEARD A "POP".THOUGHT A TIRE BLEW, SAW WHITE SMOKE ON THE SIDES OF THE CAR AND PULLED OVER. MY BOYFRIEND GOT OUT IMMEDIATELY TO LOOK FOR A BLOWN TIRE. I PUT THE CAR IN PARK, SHUT OFF THE IGNITION AND BLACK SMOKE BEGAN POURING INTO THE CAR. I KNEW THERE WAS NOT A BLOWN TIRE AND YELLED FOR BOYFRIEND TO HELP GET OUR TWO YOUNG CHILDREN OUT OF THE CAR. OPENED THE BACK DOOR AND COULDN'T SEE THE KIDS DUE TO ALL OF THE BLACK SMOKE AND ENTIRE FRONT END WAS ON FIRE WITHIN SECONDS. I GOT THE KIDS TO SAFETY AND THE CAR PROCEEDED TO BLOW UP THREE SEPARATE TIMES IN WELL UNDER 10 MINUTES. THE MAN DRIVING BEHIND US HELPED AND STATED TO ME THAT FUEL WAS LEAKING FROM THE CAR WHILE HE DROVE BEHIND US PRIOR TO THE "POP" WE HEARD. IT WAS A TOTAL LOSS, NO POLICE REPORT DESPITE HIGHWAY BEING SHUT DOWN FOR A HOUR AND DETECTIVES SHOWING UP LATER. INSURANCE COMPANY WASN'T GOING TO INVESTIGATE, I GOT GM INVOLVED AND NOW THEY MIGHT. WAS GIVEN A CASE # BY GM, CALLED TWICE, NO RESPONSE BACK FOR 6 DAYS. I WANT TO KNOW THE CAUSE OF THIS. 5 YEAR OLD PERFECTLY MAINTAINED CARS WITH NO WARNING SHOULD NOT CATCH FIRE AND BLOW UP. I SAW AN ARTICLE ABOUT A MAN IN CONNECTICUT WITH A SIMILAR INCIDENT AND HIS WAS RELATED TO A REGIONAL RECALL THAT DID NOT INCLUDE THAT STATE. I LIVE IN WESTERN PENNSYLVANIA AND QUESTION IF THIS COULD BE ASSOCIATED. THE CAR COULD HAVE KILLED OUR CHILDREN AND HARMED INNOCENT PEOPLE