AIRBAGS DID NOT DEPLOY. DAMAGE TO FRONT OF VEHICLE SUSTAINED AT LEAST 20MPH DOWN TO MINIMUM 16MPH TRAVELING BUT MAKING A LEFT TURN. BUICK HIT ONCOMING CAR IN A NEAR FRONT ON COLLISION. BUICK'S FRONT DAMAGED BY A PUNCH THAT DROVE INTO THE ENGINE (CORNER OF ONCOMING VEHICLE HIT OUR VEHICLE JUST OFF CENTER TOWARD DRIVER SIDE) AND RESULTING IN A NEAR FRONT ON COLLISION, FROM INSPECTION BY ADJUSTER, AND FIRST RESPONDERS WERE THAT AIR BAGS SHOULD HAVE DEPLOYED. VEHICLE HAD OVER $9,000 IN FRONT END REPAIR NEEDED, ENOUGH TO TOTAL VEHICLE. BUMPER TOTALLY DESTROYED, RADIATOR AND FAN GONE, HOOD BACK TO WINDSHIELD FOLDED.