I had high hopes when I picked up this book. The plot/scenario sounded interesting - no matter what side of the "green" debate one stands on, I don't think anyone can deny that oil will
run out some day, whether it's in the near future or a few generations from now - and I've grown used to young adult books dealing with dystopian, apocalyptic or just plain disaster plots in an intelligent and decently written way.
So, yes, "Empty" held a lot of promise for me. Unfortunately what it turned out to be was a book that read like a lecture aimed at ten-year-olds (or perhaps eight-year-olds), certainly not young adults - although the half-hearted attempt at romance and characters in their later teens seemed to indicate otherwise. The language and narrative style were so simplistic it was hard to get truly interested and the lecturing, the "message" came through so hard and clear that it occasionally nearly turned me off (and I'm by and large a supporter of the ideas being promoted here).
That's not to say the book was all
bad - it was a quick and at times not completely dull read, and the characters, while not exactly engaging or with a huge amount of personality, weren't off-putting. Might be a decent read for a child / pre-teen who is interested in saving the planet and life without oil, I suppose.