The scene of Bubblegum arriving in Amsterdam was shot in Krakow, Poland. It was the final scene filmed for the movie.
The animation in the opening title sequence suggests a wedding, a honeymoon, and a car accident. This teases the audience that the bride and groom represent Bubblegum and Gary.
The reality of the "ghost world" of Pulling Push Doors is a matter of perspective, but Aaron Hendren has stated that he told every member of the cast that the entire story takes place in Bubblegum's mind as she slips into death. This could have been a director's tool or a statement of where the movie actually happens.
Bubblegum struggles to swallow food or drink.
Two of the four main Bettys from Hendren's previous movie, Psycho Bettys From Planet Pussycat, are featured in this movie.