Air bags have been in vehicles for many years now, and while they have undergone changes over the years, they are undeniably saving lives in accidents. It's common today to have both driver and passenger side airbags. In the backseat, many vehicles even have side curtain airbags for the backseat passengers near the doors. Where airbag protection has been lacking has been from the center for the front seat occupants. GM is changing that with the addition of a center airbag for front seat passengers to its 2013 Acadia models.