Tesla CEO and the world's second-richest person, Elon Musk, has come out in support of American singer Britney Spears who's demanding freedom from the conservatorship of her father Jamie Spears. "Free Britney," Musk tweeted on Monday. The 39-year-old singer is demanding freedom from "abusive conservatorship" that was placed around 13 years ago after her multiple mental health breakdowns.