Have you read this:How to Build a Car - 8/10
Adrian Newey autobio in sorts - a potted history of the history of motor racing from his prospective. the Senna stuff is brief, as was their working relationship - but he makes the hidden bits of F1 and why they did what they did really interesting. gets a bit overly technical in parts but newey explains most of it and why they did what they did. warmed to the fella by the end, he's obviously a rather driven fella mind...
I read this before Newey's book and found it really interesting if you have an interest in F1 but aren't a petrolhead. Basically a series of conversations between Brawn and Newey discussing a period of time in F1