Zo 's caught the racing bug. Not only is she following in the tire tracks of her older brother as a rally racer, she thinks she might even have the stuff to become a racecar engineer one day. But Zo 's mother has another dream for her daughter, and it's called "Zo Kendall, M.D." In this fast-action sequel to Racing Fear, Zo must learn to stand up to her mother's good intentions before her true aspirations come to a screeching halt.