Meet America’s youngest female billionaire: Lynsi Torres, heir to beloved hamburger chain In-N-Out. Torres keeps a low profile, but the little that’s known about her is fascinating. At 30, she’s a thrice-married competitive drag racer who lives in a seven-bedroom, 16-bathroom mansion in California. Bloomberg reports that she inherited the company after a series of deaths in the family, including a plane crash and a prescription-drug overdose. She currently has half ownership of the company through a trust and will get full ownership when she turns 35. What she’ll do with In-N-Out is anyone’s guess.