I would like to ask him was it worth it? Couldn't he publish the book after he officialy retired as the Stig, instead of loosing (i imagine) a well payed job..
Who'd want to read a book by a failed racing driver? He's only ever won ASCAR, which isn't exactly in the upper echelons of motorsport. In fact, the Stig is the best thing he's ever done.
It's like if I wrote a book about my racing. Only my Mum would buy it.