My 10 yr old doesn't use a car-seat. Legally, she doesn't have to, but my 6 yr old has to sit in a booster seat. Meanwhile, a toddler has to sit in a harness car seat, and a baby in a special infant seat. They all get different seats based on the ages. And none of them can sit in the front seat like an adult can. Everyone has an appropriate seat based on their age.
Sometimes as Christians we can judge other Christians on where they are "sitting."
To find out how, meet me over at Titus 2 in Action, where I am a featured contributor today.