When Paul Schrader first approached Amanda Seyfried, he was surprised to find that she was pregnant. When she expressed interest in the project, he wrote her pregnancy into the script.
Writer/director Paul Schrader stated in a Q&A at the Rotterdam Film Festival 2018 that he was surprised while editing the film to notice how many similarities there were with Taxi Driver (1976), a film he also wrote.
Shot in 20 days on a $3.5m budget.
Paul Schrader was motivated to write the screenplay based on his despair at the effect of climate change on the planet.