I WAS HIT ON THE HEAD INSIDE MY 2002 SUBURBAN, WEARING MY SEAT BELT AT 48 MPH BY AN ONCOMING MAZDA MIATA. MY STEERING COLUMN COLLAPSED, I WENT INTO ONCOMING 3 LANES OF TRAFFIC, WENT UP A CURB, WENT THROUGH A BRICK RETAINING WALL, AND HIT A TELEPHONE POLE. MY AIRBAG DID NOT DEPLOY ON ANY OF THE 3 IMPACTS. WHY? ALSO, MY DRIVER?S SEAT CAME OFF THE TRACK. *LA