2001 Toyota Camry Solara

I HAD AN AUTO ACCIDENT WHERE I HIT THE BACK OF A VAN STOPPED TO TURN ON A ROADWAY (LEGALLY) AND I FAILED TO SEE IT UNTIL I WAS RIGHT UPON IT. I HIT THE BACK OF THIS VAN AT APPROXIMATELY 40 MILES PER HOUR. ALTHOUGH THE VAN WAS HARDLY DAMAGED, MY WHOLE FRONT END OF MY CAR WAS DAMAGED, INCLUDING PARTS OF MY RADIATOR, FANS AND BUMPER, LIGHTS, AND GRILL. HOWEVER, MY AIR BAG DID NOT DEPLOY. THE PLACE THAT FIXED MY CAR, CERTIFIED COLLISION CENTER ASSOCIATED WITHOUT THE DURANT TOYOTA HOUSE HERE IN WEATHERFROD, TEXAS SAID THAT ONLY ONE OF MY SENSORS WAS DAMAGED DURING THE IMPACT. NOW I WANT TO KNOW IS MY AIRBAG GOING TO DEPLOY WHILE I AM DRIVING OR WHEN I HIT A BUMP OR POTHOLE AND WHY DIDN'T IT DEPLOY DURING THIS IMPACT? I SUSTAINED BACK AND NECK INJURIES FROM THIS IMPACT. I AM HAVING PHYSICAL THERAPY TO HELP MY THORACIC MUSCLE. I ALSO HIT MY KNEES ON THE DASHBOARD DURING THE IMPACT. I ALSO HAD A LARGE BRUISE AND A SMALL CUT ON MY LEFT SIDE OF MY THROAT FROM WHERE THE SEAT BELT CAUGHT ME. TOYOTA NEEDS TO REPLACE MY AIRBAG AND EXPLAIN TO ME WHY IT DID NOT GO OFF. A 40 MILE PER HOUR IMPACT HIT SQUARELY BEHIND ANOTHER VEHICLE SHOULD HAVE SET OFF MY AIRBAGS, AT LEAST I FEEL IT SHOULD HAVE. I HAVE NO FAITH IN THE AIRBAG THAT IS PRESENTLY INSTALLED IN MY CAR AND I FEEL THAT I WOULD NOT HAVE HAD THESE BACK AND NECK INJURIES IF IT HAD GONE OFF AS IT SHOULD HAVE. I WANT MY CURRENT AIRBAG COMPLETELY REPLACED, ALONG WITH THE SENSORS, BY TOYOTA.*JB