They haven’t covered this yet but I’m pretty sure it’s got to do with the mysteries of Mary and honoring her as the Mother of God, or more precisely, the human facet of God.
Anyway I’m a terrible example of Christian who hasn’t completed the Rite of acceptance to become a Catuchemen yet (that will happen on the first night of Advent) so you may want to ask @patron-saint-of-smart-asses@tokillthedragon or @spookymadameliberty as they know more than I. You can ask me about cars though