WESTBOUND ON I-285, MIDDLE LANE, A CAR STOPPED TOTALLY IN FRONT OF US, AT DUSK. WE HAD 5-6 VEHICLE LENGTHS BETWEEN US ,BUT MOMENTARILY DID NOT REALIZE THE CAR IN FRONT WAS NOT MOVING, AS SHE DID NOT EVEN PUT ON HER BRAKE LIGHTS. WE BRAKED, HITTING HER IN THE REAR BUMPER. WE WERE NEARLY HIT BY A TRACTOR TRAILER BEHIND US, BUT MERCIFULLY, HE WAS ABLE TO MOVE THE FRONT OF HIS RIG TO THE RIGHT LANE BESIDE US. WE REALIZED ALMOST IMMEDIATELY THAT OUR AIRBAGS DID NOT DEPLOY, EITHER SIDE. THE SEAT BELTS REALLY HELD US. WE CONTACTED TOYOTA REQUESTING THEY PAY FOR THE DIAGNOSTIC TEST TO SEE IF THE AIRBAGS ARE FUNCTIONAL. WE SENT A CERTIFIED LETTER PER THEIR INSTRUCTIONS 4/16/14. THEIR STATED RESPONSE TIME IS TWO WEEKS, BY LETTER. WE STILL HAVE NOT HEARD FROM THEM. WHILE THE CAR HAS HAD SOME SMALL FENDER BENDERS ON ITS REAR, IT HAS NEVER BEEN IN AN ACCIDENT OF THIS MAGNITUDE. WE OWN 2 TOYOTA CAMRY XLES AND ARE CONCERNED OUR AIRBAGS. ...UPDATED 07/15/14 *BF