Chris Heitkamp of Fort Recovery buckles his sons in car seats inside the family's crowded minivan. Two of the children - Owen, 4, at left, and Jacob, 5, at right - must ride in booster seats, in accordance with a new law that goes into effect on Wednesday. Heitkamp's other son, 2-year-old Andrew, is buckled into a regular car seat that is suitable for his age and size.