But second, that doesn't matter. Most places do not have laws that prohibit children in the front seat of cars, only that they use appropriate child seats. Further, child seats are typically required for _children_, not just infants. IIRC, for example, in Texas, child seats are required for any child under the age of 8, unless they are taller than 4'9". It is totally reasonable for a 7 year old to want to go for a ride in their parents "fancy" car. It's actually very responsible of this person to get a child seat properly installed in order to support that.