I can't belive this has been written in 2007, it reads so much older and I mean it in a good way. This is just like a classic time travel story from maybe the 60s (but still very fun and accessible if that scares you off). It's a very fast read, gives you exactly what you expect from a fun time travel romp, there are interesting futures and some whacky situations. There is also that weirdly sexual component that is sometimes in the old stuff and the whole book isn't too deep, but I was enjoying myself a lot, especially since time travel always stays part of the plot and discussion.