Automotive airbags are a hoax. A very expensive hoax.
The idea arose in the 70s for a passive restraint system, cos people wouldn't use their seat belts. By mid-80s, they finally realized that airbags wasn't going to work - single impact and no side protection. Without seatbelts, people could slide under the bag.
Didn't matter there was no efficacy. Government mandated them.
They have always been especially dangerous for small people/children. As Lee Iacocca said in 1984, the airbag solution is worse than the problem.
The airbag offers no advantage over the shoulder belt, which people are required to wear, anyway.