Apparently 7 eleven exclusive, imported from Thailand. Doesn't actually have much coffee taste, though there is sort of a coffee like after-taste. Much of it tastes mostly like Diet Coke, though there is sugar in it. Whether it works like coffee I don't know, since there is supposedly twice the caffeine and half the calories. But taste wise it isn't anything special.

Full review https://justafatboi.com/coke-coffee/