 They say that car crashes happen in slow motion. The reality is that crashes happen fast. There's no time to think and no time to check if your child is in the right car seat. Car crashes are a leading killer of children 1 to 13. Are your kids in the right seat for their age and size? Don't think you know. Know you know. Get more info at safercar.gov slash the right seat. A message from the National Highway Traffic Safety Administration and the Ad Council.