A kind of grindhouse Harold Pinter.
Repo Man's major point would seem to be "fear of nuclear war". Yet, it treats its LA location as though it had already experienced a kind of economic fallout. Long shots of paved-over landscapes that double as nature for a group of Hardcore leftovers. Children whose very future seems so bleak that they often respond to the bizarre sci-fi occurrences in a non-chalant way.
Even with all that, the gallows humor works well with Robbie Muller's playful cinematography.