I OWN A NISSAN XTERRA 2004 IT WAS IN PARK AND ROLLED BY ITSELF FROM FLAT TO DOWN A DRIVE HITTING A MOVING CAR THEN GOING DOWN A CLIFF INTO A TREE. NO ONE AT NISSAN OR ALLSTATE CAN EXPLAIN WHY IT ROLLED! NISSAN BLEW ME OFF SAYING IT CAN HAPPEN WHAT CONCERNS ME IS THAT IF IT COULD JUST ROLL LIKE THAT WHY DID THE AIR BAGS DEPLOY? THERE EXPLANATION WELL--- IT WAS IN PARK! SO HOW CAN IF IT IS IN PARK NO KEYS CAN IT ROLL FORWARD THEN DOWN???? *JB