This trailer is the kind of efficiency that will make you proud to live in the era you live in.
Before Star Wars, there was THX 113. Newcomer George Lucas expanded his short film Electronic Labyrinth THX 1138 4EB while shortening the title to create this vision of the future. He also wrangled Robert Duvall and Donald Pleasence for this sci-fi epic about what all sci-fi Dystopian epics are about: two humanoids finding love in a drug-addled world that forbids it.
Also like most Dystopian futures, some of the dialogue (SEN’s) is drawn directly from Richard Nixon’s speeches.