thats pretty sweet, now i want to make one, and the only things ive ever seen in 3L bottles are orange soda and a brand of root beer called something like "3rd avenue" i think. its really good root beer cause they put in honey.
For many decades Barq's was not marketed as a "root beer." This was in part a desire to avoid legal conflict with the Hires Root Beer company, which was attempting to claim a trademark on the term "root beer." It was also due to differences from other root beers at the time. The base was a sarsaparilla