 Some of the missiles fired during the space battle scene are  actually Pepsi cans. This may be a reference to the film _Chôjikû  yôsai Macross: Ai oboeteimasuka (1984)_ qv), which used a similar  gag that replaced a pair of missiles with a Budweiser can and a sake  flask. This gag was courtesy of mecha designer Shôichi Masuo (qv),  who also previously worked on the Macross scene in question.