In-universet, telefonbåsen (levereras till Bill och Ted av Tre viktigaste människorna i världen ) var faktiskt inspirationen för TARDIS snarare än tvärtom , åtminstone enligt den officiellt licensierade " Bill & Ted's Triumphant Return " comicbook.
UrtidssystemetvartidsmaskinenursprungligentänktattvaraentidsresandeHertzvan.Dethäruteslutessom för nära BTTFs DeLorean och ersatte en glasskyddad telefonkiosk av visuella skäl, främst för att passa in med "themed-tema" av filmen.
People were still nervous about the time-traveling van being too much like Back to the Future and a change was needed. The idea for the phone booth was suggested by director Stephen Herek, who was looking for something that would provide the exciting visual nature of a roller coaster ride. Both Ed and Chris really liked Stephen, who told them that when he first started reading the script he put it down, put Van Halen on the stereo, and read it while listening to rock music.