Rover's CAD work is done in OnShape, so anyone can fork the design for free. It's licensed CC0 so it can be used for any purpose with no restrictions. Get started with the files here:
Rover runs an open source licensed Python stack I wrote myself, and uses a Raspberry Pi for basic control. (Future versions may use a Jetson TX2 or similar.)
A video showing Rover V2's rolling chassis is here:
My long term goal with reboot is to make many useful open source robots, and then attempt to start communities where the robots support the survival of the community members by making them food and other useful goods. I discuss this concept in my essay The Machine. http://tlalexander.com/machine/
Near term, I will use Rover to experiment with low cost sensing for robotics using simple cameras as the primary sensor in localization, obstacle avoidance, and navigation systems.
I started Rover V1 in Oct 2017 and had it driving by December. Work on Rover V2 started around the beginning of April 2018.