WE WERE TRAVELING 64 MPH ON INTERSTATE 75 SOUTH (IT WAS RAINING HARD), WHEN WE WERE HIT FROM BEHIND AT 75-78 MILES PER HOUR BY AN F150 TRUCK. OUR AIRBAGS DID NOT DEPLOY WHICH CAUSED US TO HIT THE STEERING WHEEL AND DASHBOARD. AT THE RATE OF SPEED WE WERE HIT, THE BAGS SHOULD HAVE DEPLOYED. OUR SORENTO HAD OVER $9,000 IN DAMAGE TO THE REAR. THE BAGS ARE A MALFUNCTION, AS FAR AS WE ARE CONCERNED.