I've had the produced version of this [1]. I don't know if they're still selling it? I found it interesting, but the coffee half of the flavor felt inauthentic to me. I do drink coffee and cola regularly, but I've never mixed them other than the canned version.

I did also try a cola-coffee flavored carbonated water in a can from LaCroix, which I didn't care for at all. But YMMV, it's worth a try.

[1] https://www.coca-colacompany.com/media-center/coke-with-coff...

I do this some days when my last cup of coffee has gone cold. I’ll add Diet Coke to the coffee.

I enjoy it.