Youngest American Woman Billionaire Found With In-N-Out

Lunchtime at the flagship In-N-Out Burger restaurant in Baldwin Park, California, is a study in efficiency. As the order line swells, smiling workers swoop in to operate empty cash registers. Another staffer cleans tables, asking customers if they’re enjoying their hamburger. Outside, a woman armed with a hand-held ordering machine speeds up the drive-through line.

Such service has helped In-N-Out create a rabid fan base -- and make Lynsi Torres, the chain’s 30-year-old owner and president, one of the youngest female billionaires on Earth. New store openings often resemble product releases from Apple Inc., with customers lined up hours in advance. City officials plead with the Irvine, California-based company to open restaurants in their municipalities.