I have wrenched my back several times getting a child into a childseat from outside a car.
Today’s invention is a childseat attachment which allows the seat to hang securely on the window frame of a car door. This lets a parent place their child in the seat without stooping and stretching.
The child is then belted into the seat and the door closed, allowing the seat to be detached, through the open window, through the very small distance onto the car seat.
The car door can then be reopened and the childseat attached to the car seat via the main belt in the usual way.