WHILE DRIVING SOUTH ON 395 AND TRAVELLING 45MPH ON WET ROAD CONDITIONS, CONSUMER'S VEHICLE WAS STRUCK FROM THE REAR, CAUSING VEHICLE TO SPIN OUT OF CONTROL, AND SLAMMED BACKWARDS INTO A GUARDRAIL. DRIVER'S SIDE AIRBAG DIDN'T DEPLOY. ALSO, DRIVER'S SEAT BACK DETACHED FROM THE FLOOR, AND THE BACK OF THE DRIVER'S SEAT COLLAPSED CAUSING INJERY TO CONSUMER'S BACK . *AK.ET.