I am building the second version of Prairie Dog, a mobile robot platform that was tested in Afghanistan. This second version is geared towards private security companies and is part of my Masters thesis project at the University of Calgary.  
 
I use the SVS controller and software that I have written. I will be using the Navboard M3, ultrasonic sensors, and XBox 360 Kinect for navigation and obstacle avoidance. I have built a new chassis and  have the SVS and Sabertooth 2x12 hooked up to the platform. I will be adding all the sensors and programming basic functionality. After that, I will spend a good year programming in AI and getting the robot ready for its application.
 
Please have a look at a video of progress thus far:
 
http://www.youtube.com/watch?feature=player_embedded&v=E2YZo5L5Lwc
 

The code I have is built off open source code. I suspect that I will upload it to a site to share once I secure the design.
 
I will be developing a lot of AI utilizing the sensors I am going to put on the robot. Including an Xbox 360 Kinect for depth perception. It is not clear if  I will put that as open source not at this time.

Most likely. I have not decided on the exact way I will do things yet.
 
Here is a second video of the system driving around.
 
http://www.youtube.com/watch?v=YiP9OMTppEk
 
I am now integrating the Kinect sensor and building a cover for the top of robot. Should have more videos up soon.

Yes, just using skid steering. It is a power hungry way to turn, but for AI purposes it simplifies navigation greatly.  
 
I am looking at dropping the surveyor blackfin processor, and using something more powerful and integrating the Robot Operating System (ROS). I love the blackfin and the software, but it is going to end up being too slow for my application. I am really not sure what to replace it with at this point though.

Seems to drive pretty well, even outdoors!
 
Thanks for the videos.
 
Alan  KM6VV