I have a question about what is considered "open" liquor. Some time ago, my Dad told me that if you have an incomplete 6 pack in your trunk - for instance 2 totally sealed, closed bottles that have no been opened - that is "open" liquor because the other bottles are missing an thus that container (the 6 pack as a whole) has been "opened". Is this true???
In short, what you described is not considered "open liquor". Open alcoholic liquor is normally interpreted as open containers (cans, bottles, wine boxes, etc.) that are no longer sealed by the manufacturer. It does not refer to the holders for containers.