[JackThLion]

Just coming back in to add this on to my original post...

Fisher Price Safe Voyage Booster Seat... Regardless of what happens with the two younger kids, does this look like a doable option for the bigger one? Either in my car or my husband's... It looks like it's the most narrow booster around but still has the side head protection?

	Booster Seat A booster seat raises your child up so that the car's lap and shoulder belts fit correctly. The lap belt should fall across the upper thighs. The shoulder belt should go across the middle of the shoulder and chest. A booster seat is used for older children up to about 80 pounds. Some states have passed laws requiring booster seats for children up to age 8 or 80 pounds. Check your state's law.