Well then you are not looking in the right place. Every state has an open container law for the same reason that the drinking age is 21 in every state. That is, the federal government withholds funding to all states that do not have such a law.

If they won't sell it to a 14 year old, you can't drive with it open.

Laws define an 'alcoholic beverage' as containing a certain % of alcohol. i.e. Canadian beer about 4% to 6%, U.S beer about 4%, wine about 11%, and the good stuff about 40%. So-called NA beer (advertised as 'low-alcoholic beer, not non-acoholic beer) contains only about .5% alcohol (point five %), about 1/10th the amount of alcohol in an average 'real' beer. It is brewed to that amount so it will always be well under the legal definition of an 'alcoholic beverage' and not subject to any state or provincial liquor laws that I am aware of. Therefore, so-called non-alcoholic beer (really low-alcohol) not being an alcoholic beverage by law CAN be consumed while driving. An officer stopping you, however, may very well seize the can and have it analyzed to ascertain if it is an alcoholic beverage or not. It's not unknown for someone to pour real beer in an empty NA beer can, so you had better have an honest face and not showing any signs of intoxication. You will likely also be subject to a roadside breathalyzer test to determine your BAC (Blood Alcohol Content) because your breath will smell of 'an alcoholic beverage' (not 'alcohol' which is basicly odorless).