This is a love story to the bicycle. It's the story of the author having his perfect custom bike made, and visiting each component manufacturer to see how they do what they do. It's also a history of the bicycle, mountain biking, bike culture and the resurgence of the bike in contemporary days. I absolutely loved it, and fell more in love with bicycles and bicycling as a result.

I listened to the audiobook version, and it was excellent in that format.