A book about the Chevrolet Bolt, including the Cruise derivatives, has just been published on Amazon. With the current 'Kindle Unlimited' promotion, reading the ebook is free of charge.
It's interesting that this same post has been taken down from the Chevy Bolt EV Forum. This post didn't include a link to the book, but here it is.
The price to buy the Kindle version has been cut to $2.99. I think your link still works. It's an interesting read.