Billy Kool was an ordinary boy until he was thrust into the life of an extreme sports TV celebrity.Billy's grandfather is coming to stay, although not for the usual reasons. He wants to give Billy his car, his most loved possession since he believes he's too old to drive. Thinking about this, Billy talks to Shey and they decide to include his grandfather in the most extreme sport yet; kart racing!At the end of the book, there is an extreme information section detailing the origins of kart racing, a glossary and a description of the equipment used when kart racing.Part of an 8-book series, the Billy Kool books are informative, empathetic and exciting; targeted to readers and reluctant readers alike ages 8-11 years.