I WAS DRIVING MY CAR ON A CITY STREET GOING THROUGH AN INTERSECTION WHEN ANOTHER CAR THAT I DID NOT SEE OR EXPECT RAN A RED LIGHT SLAMMING INTO REAR PASSENGER SIDE DOOR OF MY CAR. THE DOOR HAD TO BE REPLACED BECAUSE OF DAMAGE. I DON'T UNDERSTAND WHY THE SIDE AIRBAG DIDN'T DEPLOY AFTER SUCH A SEVERE IMPACT?