Brainbox by Christian Cantrell is 99 cents in the Amazon Kindle store, and has received an average user rating of 3.5 out of 5 stars based on 22 customer reviews; you can check it out by clicking here or typing in http://amzn.to/mzOsXB into your computer’s web browser.
I read this one in October 2010, and thought it was pretty good and rated it a 4 out of 5. This is a short story, but I believe it could be an outline for a full-length novel.
Here is the book’s description from the Amazon website:
When the Earth begins cooling unexpectedly, humanity is left with only a few degrees of habitable latitude along the planet’s equator. After establishing themselves as the three remaining powers in the world, the Americans, Chinese, and Russians eventually turn on each other in hopes of securing the last of the Earth’s resources for themselves.
In an attempt to break the decades-long stalemate, the American military turns to Miguel dos Santos — a brilliant Brazilian roboticist — for help in creating the ASRA, or Autonomous Self Replicating Asset. The secret to the ASRAs is their neurological processors, also known as the brainbox, which enables the machines to “combine the logic and reasoning of a computer with the desperation and hate of the human soul.” But as Miguel reluctantly carries out his orders, it becomes clear that he has other plans for what remains of humanity.