Fun and provocative, but this felt like it should have been a trilogy and unfortunately got squished into a single volume. Kim Stanley Robinson blurbed this and is thanked in the acknowledgments, so I don't feel totally dismissive of Newitz's efforts when noting that the influence of the Mars Trilogy is pretty apparent in this epic planetary narrative. But Newitz only gets like 350 pages to create their centuries-spanning world, compared to KSR's set of tomes, and it at times I felt a little rushed along. I wanted to have more time with some of the characters and the political economy.
I love that one of the central characters is a sentient organic flying train though, that's great. Also minor spoiler, the train fucks!