Steering wheel airbag did not deploy in a high speed crash. The knee airbag DID deploy. My daughter was in an accident with another vehicle. The other vehicle was traveling about 40 mph. It was a very high impact crash that launched by daughters car about 30 feet. The steering wheel airbag did not deploy. As a result my daughter hit her and and received a severe concussion. She was wearing a seat belt. The vehicle is in the process of being classified as "totaled" by insurance company but they have not inspected the specific airbag issue. There were no warning lamps or messages indicating the airbag was non-functional.