I WAS DRIVING DOWN HWY I-45 SOUTH IN DALLAS, TX AND HIT BLACK ICE. THAT IS ICE THAT CANNOT BE SEEN ON THE ROAD. I WAS GOING APPROXIMATELY 50 TO 55 MPH. I HIT THE BRAKES AND HIT THE BACK OF A METAL TRAILER. THE WELDED MESH LANDSCAPER TRAILERS POPULAR IN DALLAS. IN OTHER WORDS I HIT A FLAT VERTICAL HARD SERVICE. MY AIRBAGS DID NOT DEPLOY. I TOLD HYUNDAI OF THE ISSUE AND THEY SENT OUT SOMEONE TO INSPECT THE VEHICLE. THEY SENT A LETTER STATING "THE ELANTRA'S FRONTAL AIRBAGS ARE NOT INTENDED TO DEPLOY DURING EVERY IMPACT THAT IS GENERALLY DIRECTED AGAINST THE VEHICLE'S FRONT END." I AM CONFUSED, I THOUGHT A AIR BAG SHOULD WORK WITH ALL FRONT END IMPACTS AND COLLISIONS. WHEN I PURCHASED THE VEHICLE I DID NOT GET A DISCLAIMER STATING WHEN THE AIRBAG SHOULD WORK AND SHOULD NOT WITH A 50 MPH FRONT END COLLISION. I AM UPSET WITH THE WAY HYUNDAI IS RESPONDING. I DID NOT EXPECT A NEW CAR, ONLY FOR HYUNDAI TO ACKNOWLEDGE THE PROBLEM. *TR