TechTV had an interesting story on the NIST test course for comparing performance of rescue robots across a vast array of obstacles... Couldn't find the video on the TechTV site yet, but here's what I found at NIST:
http://www.nist.gov/public_affairs/releases/n00-13.htm
http://www.nist.gov/public_affairs/releases/urban.htm
The second link has pics of the course (unfortuantely during shipping, not once built) The robot in this pic
(http://www.nist.gov/public_affairs/releases/photo2.jpg)
performed the best, completing all tasks and climbing the stairs to rescue the remaining mannequins...