Kooba Cola, the Soda that Never Was

Summer 1941 - during this time, all the Fox comic book titles were full of ads
for a drink called Kooba Cola, which was apparently never made (a
Victor Fox (Fox publisher) scheme to create a demand before the product even
existed!).

Fox comic book titles were Fantastic Comics, Green Mask, many others. They only
were published within 1938-1942.