WHILE TRAVELING AT AN UNKNOWN SPEED VEHICLE SWERVED TO AVOD HITTING ANOTHER VEHICLE, AND WENT INTO A DITCH. THEN, WENT BACKED ACROSS ROAD AND WENT INTO A CULVERT WHERE THE VEHICLE IMPACTED A TREE. BOTH FRONTAL AIR BAGS FAILED TO DEPLOY. CONSUMER'S STEP SON WAS DRIVING VEHICLE AND WAS KILLED IN CRASH, TWO OTHER PASSENGERS SUFFERED RESTRAINT BELT INJURIES, AND WERE RELEASED FROM HOSPITAL. PLEASE PROVIDE ANY ADDITIONAL INFORMATION/ATTACHMENTS.*AK