Are there any carbonated coffee drinks?!
Answers: On the market? I think they'd be good.
Not that iv seen but why not chill black coffee with honey and use in a soda stream. Try using Cinnamon or vanilla instead of honey. The possibilities are endless.
I know at one time Coke had a product called Coke Black, which was coffee and soda mixed together. I never got around to trying it(even though I wanted to) before Coke pulled it off the markets. Apparently it wasn't that good.