Cerebrum

Our favorite (and most hated) characters traverse through the Capital, the Brambles, Upper Discordia, Space Elevators, and the Hippodromes.
ALSO it's STILL:
Humanity vies for its place on earth. Men and women store their consciousness elsewhere with dreams of a great return. The survivors are forced to trespass into the formerly dormant mind of the individual who developed the mind-harnessing technology.