IIRC there was a brief period of time in the US where manufacturers could omit putting airbags in cars if they used an automatic seat belt instead. So a couple

IIRC there was a brief period of time in the US where manufacturers could omit putting airbags in cars if they used an automatic seat belt instead. So a couple manufacturers did this to keep their costs down, but eventually airbags were required in all cars and the automatic seat belts went away.