Julia Fox wants to discuss space travel with Elon Musk. The 32-year-old actress is eager to get in touch with the billionaire businessman, and discuss her ideas about “sustainability” and her ambitions to go into space. Asked whose phone number would she most like to have, Julia replied: “Elon Musk. I have a lot of ideas.” The movie star subsequently expanded on her ambition, saying she wants to explore how “techy things” can benefit the wider world. Julia – who dated Kanye West earlier this year – told The Face: “Well, I can’t give them away … But a lot of ideas in terms of sustainability and…