And to maybe answer the question of "why they still put them in", from what I recall from reading is that it is due to the supply they had. The choice is either shut the production of cars down, or roll with the defective airbags and do a recall later. It would be a few/several years for the new, non-defective airbags to catch up production and meet demand. Toyota and others rolled with the defective ones because they are in the supply system, it was impossible to get the new bags, and the defective bags are fine for a period of time until they of course do a recall due to the safe time lapse.