Without knowing he was an Aussie you would know he was an Aussie simply because of the way he talks. I'll get my negative thoughts out of the way first: he repeats himself a lot and you are left feeling that he has very mixed feelings about Vettel. In some paragraphs he refers to him as Seb, Sebastian, and Vettel depending on which sentence you read, and after criticising him in one sentence he then goes on to praise him in the next sentence. It's quite annoying and detracts from the rest of the book which is quite excellent.
Great insight into growing up in the middle of nowhere in Oz and wanting to become a Formula 1 driver. Great descriptions of driving - and crashing - racing cars, where you can almost feel you're in the car with him. Some great details about what people we think we "know" are really like, from Michael Schumacher, to Frank WIlliams and Patrick Head, to Bernie Ecclestone, and some especially funny stuff about Flavio Briatore. It seems that Helmut Marko and Christian Horner really are the sort of people that they are rumoured to be, namely a vindictive man and a hopless people pleaser. Very interesting to read things which explain what happened at certain races, where you found yourself asking "Why did he say/do that". Finally, it's a great love story, especially if you are a dog lover :-)
All in all a must read.