Don't get me wrong...I really enjoyed this book. But I really thought the last chapter was going too far. Not everything needs to be wrapped up so neatly. I half expected the kid to start scratching himself...or worse. To me, it felt like an afterthought, suggested by an editor who wanted a feel-good ending.
I think the ending made the book for me, but as a massive racing fan, I think the entire book may have made a bit more sense to me, the last chap even more so. Not to be rude, but if you don't understand the significance of Imola, Italy (the title of the last chap) or Ayrton Senna (the driver to whom he makes most references throughout the book), please watch this: http://www.youtube.com/watch?v=aNmqn3heGgE They even talk about the 1993 race to which Enzo makes references multiple times as "the greatest exhibition of driving talent" at around 9:57.