I finished the book a few days ago, and...it's about what we thought. It's basically an extended fan letter to Elon Musk, combined with some technical details you can glean off of this website and others. As far as I can tell there is no original reporting, nor did the author actually interview anyone at SpaceX as far as I can tell.Is it a horrible book? No. But I'm left wondering who the audience is supposed to be. If it's space enthusiasts...they're going to be disappointed, because the book simply compiles information that has been posted publicly on websites for years now. Yet at the same time I can't imagine a general-interest reader would be very interested in a book like this: the subject matter is too specialized and too technical in nature.Ultimately the book is not technical enough for technical readers, not in-depth enough for people looking for additional "insider" details on SpaceX itself, and too technical for other readers. Save your money.
Elon supposedly was interviewed by Chris a fair bit, back in the day... was he a user here? did he ever post anything?