These sushi tanks were created at Kurisakiya restaurant in Ōarai, Ibaraki, Japan in recognition of Japanese anime and manga series Girls und Panzer:
“The military girls anime is set in the town of Oarai in Ibaraki Prefecture, which is where Kurisakiya is located. Thus, tank sushi! Girls und Panzer< features real Oarai locations, and that helps create local tourism: Anime fans often like visiting real-world locales featured in their favorite cartoons."
Hit the jump for more pics.