It's a bit more unconventional than Cherry Coke in the US. But in Takko, Aomori Prefecture, Japan, garlic flavored soda is not a surprising product. That's the garlic capital of Japan, which produces garlic beer and garlic ice cream in addition to regular bulbs of garlic.
Audrey Akcasu of Rocket News 24 reports that the new drink is called Takkola, a combination of the name of the town and the word "cola." The soda is a simple combination of ground garlic and cola. It's supposed to be good for your heart, but, presumably, not for your breath.