I believe some of the older Model 3s in some regions don't actually have emergency releases in the backseat; you're supposed to lower the seats and escape through the trunk (which does have an inner handle).
Is that correct? And if it is, is it safety compliant? I don't think I can release the seat backs in the backseat of my car from within the passenger compartment. You have to open the trunk and pull the release for the seatbacks from there. I can imagine kids wreaking havoc by pulling down the seatbacks from within the car.