Gnu

That suggests the door is left open so that someone can snatch that quickly. In which case, if you see a baby in distress, you just open the door and let the baby out, don't you? If the door is locked and it's in public I think people might react to someone smashing the windows of a car and hauling a baby out.

Playing 'hypothetical situations' is a great game but you can't get away from the fact that - however bad leaving a child is - it's pretty low risk.