 In a reference to the 1980s TV series,  _"Hitch Hikers Guide to the Galaxy, The" (1981) (mini)_ (qv), when  Zaphod first appears, he is eating from a packet of Starbix cereal  (the "nasty but nourishing" Starbix packet can be seen in episode 5  of the TV show). Later, during the missile chase scene, Zaphod  deliberately saves the cereal box as people and objects are sliding  around the bridge.