This is a great primer on car hacking, but in my opinion it focuses a lot on the "physical layer". My bet would be that the future is going to be based in things like what Comma.ai is building upon what the book describes.
In particular, their opendbc repo, the stripped down version of Android and the cabana sniffing tool.
As a native English speaker I'm not sure I understand what you've said there.
> (The future) (is going to be) (based in (things like (what (Comma.ai) (is building upon) (what (the book) (describes)))))
I interpreted it to mean:
> The future will have many products similar to those made by the company Comma.ai. Comma.ai creates technology on top of the hardware described by this book.
(The future)
(is going to be)
(based in
(things like
(what
(Comma.ai)
(is building upon)
(what
(the book)
(describes)
)
)
)
)