I read the book when it came out in 2004, and I've forgotten enough for it to be more-or-less "new." It's set during the Wally West/Keystone City era when the Flash's identify was still public knowledge and he worked with Chyre & Morillo.
There are a few continuity issues that bugged me at the time (a lot of the story hinges on Iris & Wally being blood relatives, for instance) that don't anymore, though I still have trouble with the opening scene where he's treading air to "fly" w/the JLA.
The ideas about the nature of super-speed, the speed force, the metagene, and ties to quantum physics still hold up, and would be fascinating to explore further (though they might overpower the character).
So far the audio adaptation works well, but my car's sound system doesn't handle the deliberately confusing battle sequences very well. Headphones might work better. And some of the conversations that work in print go on way too long in audio.
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