A closer look

Moving gasoline in WWII via ship was notoriously explosive, so British engineers decided to simply hide a massive pipeline beneath the English Channel. "Operation Pluto" utilized hollowed-out underwater cables spooled from giant floating drums to pump millions of gallons of petrol straight to Allied forces. It was an absolute logistical fever dream that actually worked, bypassing German U-boats and keeping tanks moving without a single vulnerable fuel tanker.