2004 Buick Regal Owner's Manual - Page 56

{CAUTION: If something is between an occupant and an air bag, the bag might not inflate properly or it might force the object into that person causing severe injury or even death. The path of an inflating air bag must be kept clear. Don't put anything between an occupant and an air bag, and don't attach or put anything on the steering wheel hub or on or near any other air bag covering. Don't let seat covers block the inflation path of a side impact air bag. If your vehicle has one, the driver's side impact air bag is in the side of the driver's seatback closest to the door. 1-50