Veteran rocker Rod Stewart is devastated that his "only talented child" Ruby, is lacking the drive and hunger to achieve success. The Do Ya Think I'm Sexy? singer, who has seven children with five different women, says the 19-year-old beauty is simply content driving around in her Land Rover. Stewart, 62, says, "Ruby seems to be the only one of my children who has some kind of singing talent. "But unlike me when I started, she's not hungry at all, unfortunately. She lives with me, drives a big Land Rover and has everything she wants. "She's just 19 but she doesn't burn for anything. But it's precisely that hunger that you need, that ambition to go out and make it. "Without it, you won't succeed."