I like watermelon soda. They had it in the Asia area as I recall, and I think it would sell around in the USA. Perhaps Coke doesn't think it is worth it, but Canada Dry sells pineapple soda which they also had at the museum. Someone like Canada Dry could add it to their portfolio. It tasted kind of like a candy but with no Coke flavoring. It was simply watermelon flavor with bubbles. It was good.