The Caffeine Bomb was an unbuilt weapon from the 2017 Continuum.
While they were vying for possession of the Golden Calf of Latte, the mad scientist Doctor Quackmire Quantum told Scrooge McDuck that he needed it because he believed the secrets it held were the final missing piece that would allow him to complete his Caffeine Bomb. He was, however, unaware of the exact nature of the secret.
Behind the scenes
The Caffeine Bomb is mentioned in the 2018 story Go, Go, Golden Years!.