If they sit on the parents lap it is all legal.
"Law: Children age 6 and younger must be properly secured in a child safety restraint that meets the requirements of federal motor safety standard number 213. Unless: All of the motor vehicle's seat belts are in use at which time the unrestrained child must be in the rear seat of the vehicle, if there is one.
https://saferide4kids.com › car-seat...
Car Seat Laws | Booster Seat
Requirements | SafeRide4Kids"
" All states and territories require child safety seats for infants and children fitting specific criteria, but requirements vary based on age, weight and height. This happens in three stages: rear-facing; forward-facing (harnessed) seats; and booster seats.
https://www.ghsa.org › issues
Child Passenger Safety Laws by State - | GHSA"
Not in the UK lol
Lucky. Lol
Everyone else has already pointed out the usual grievances, but I just gotta mention… they don’t have a fucking car seat for the baby???