LOST CONTROL TRAVELING DOWN INTERSTATE I-20 EASTBOUND IN CONYERS, GA. AXLE SEPARATED, AND REAR WHEEL CAME OFF. SUBURBAN FLIPPED 3X, SKIDDED ON PASSENGER SIDE & CAME TO REST UPSIDE DOWN. AIRBAGS DID NOT DEPLOY BUT CAR WAS TOTALLY DESTROYED, INCLUDING MULTIPLE HITS ON FRONT BUMPER. 1 PASSENGER AIRLIFTED TO MEDICAL CTR; 3 OTHERS TRANSPORTED BY AMBULANCE. ALL ALIVE & HEALING (THANK GOD), BUT DON'T UNDERSTAND WHY AIRBAGS DIDN'T DEPLOY & AXLE COULD SEPARATE. *AK