It seems like a smart move for automakers to offer integrated child-safety seats in cars, but only two manufacturers currently provide integrated booster seats as an option: Volvo and Dodge. Of those manufacturers, only certain models in their lineups have the available integrated booster seat feature.
What is an integrated booster seat? It's a booster that pops up out of the rear seat's bench, raising the child up to create a better fit for the seat belt. When the booster is not in use, it can be stowed into the seat's bench. This feature is great if it fits your child properly, as the integrated safety seat is made specifically for that vehicle. A secondary benefit of the integrated booster is it will not be at risk of becoming a projectile in a collision.