Super readable. To my pleasant surprise, Adrian's anecdotes about his life, work ethic, and the politics of F1 are as interesting as his technical insights. A quick and charming read, there's a world where this book came out very dry. Instead, it's bubbling with Adrian's goofy personality.
The only things I would have wanted beyond what's on offer:
an update for 2018-2021, and the current generation of cars, which for obvious reasons probably won't happen until 2026, if at all.
A little more depth and explanation on the technical discussion/drawings. Adrian and his ghost writer do a pretty admirable job here, and I know there's probably a slew of valid reasons they didn't do this. Still, I think it might have been cool to have an appendix where, for example, they fleshed out the math used in figuring out a new gear box, or to elucidate some of the discrepancies between CFD, the wind tunnel, and the track that pop up at various times. Maybe that would be boring. Still, even though I loved the book I've wasted most of my review talking about it, so I guess nobody wins.