i was watching late last night 11pm untold stories of the ER (i think) & the a story caught my eye about 2 young children (one being 6yo) & rtaher petite. but unfortunatly they had crashed in a car & the poor lil girl got internal injuries from her setabelt. the dr did mention about that setabelt do save lives BUT the younger children especially those udner 10yo don't fit an adult seat properly & the lap belt can cause lots of injuries to their abdomen. not a quote but def along those lines. i thought that was GREAT. i wish he said how that can be avoided. but he didn't. but i was glad it was on tv. hoping that parents will think twice about taking a child out of a booster. it reinforces my decision to keep my big 9.5yo in his booster til he FITS GREAT in a seatbelt alone.