Just found this, leafing through the latest issue of Robot Magazine:http://www.themachinelab.com/
These guys are resellers for them:http://www.trossenrobotics.com/store/c/2661-Track-Bots.aspx
" This platform is the most capable of The Machine Lab product line thus far. The MMP-40 mobile platform is the result of a conglomeration of input and ideas from people that are using robots in real life situations. We have gleaned detailed information from groups ranging from NASA sponsored research teams to Law Enforcement and SWAT agencies. We have even built several robots for the U.S. military that are in theater in Iraq right now.
Following The Machine Lab philosophy, this is a bare bones simple but rugged machine intended to help bring ideas to fruition faster.
The trend in mobile robotics is to get the machines as light and compact as possible without limiting their mobility in urban environments. At 40 pounds this platform is is designed to be a "Man Portable" workhorse. The machine can easily carry 30 pounds of payload and has plenty of space to be outfitted with cameras, sensors, computers, tools, test equipment, supplies, etc.
The best feature of this platform is that it can climb stairs. The added length and stair climbing ability allows the MMP-40 to negotiate larger obstacles and to reach deeper into urban environments.
The MMP-40 is has a water resistant aluminum hard anodized chassis. All drive train components are precision machined and all metal with long life ball bearings in critical areas."