A true surprise! A really good straight sci-fi novel that I just picked from my strange ebook library at random. A scientist striving for immortality finds it 40,000,000 years after the collapse of civilization when his corpse is found by a traveling race of machine people (humanoid brains housed in robotic bodies) and they revive his brain. As a new machine person, Professor Jameson heads off with them on their exploratory journeys. This is the first book of a series, and whatever other ones I find are definitely going in my to-read list.