LARGE PICKUP TRUCK WITH SNOW PLOW RAN STOP SIGN AT INTERSECTION, SNOW PLOW BLADE HIT LEFT SIDE/LEFT FRONT OF CAR, AT SPEED OF ABOUT 45 MPH. IMPACT FORCED CAR OFF THE ROAD, INTO A PILE OF FROZEN ICE AND SNOW. DAMAGE WAS SEVERE ENOUGH THAT LEFT FRONT DOOR WAS ALMOST SLICED OFF THE CAR WITH SERIOUS BODY DAMAGE TO LEFT FRONT AND LEFT FRONT CORNER. ALL DOORS WERE JAMMED SHUT. NEITHER FRONT NOR SIDE AIRBAGS DEPLOYED. SEAT BELT ON DRIVER DID NOT TIGHTEN UP EITHER. DAMAGE ALSO TO SEAT FRAME AND DASHBOARD. *JS