Here are two videos of the University of Memphis SoutheastCon 2010 effort.
The first video is of our prototype to test the mechanical steering system of the bot.
The video below was of a test run during SoutheastCon itself with the final design. Since this was a solar powered robot, there is a long delay before the robot actually moves while it charges up the capacitors that store the energy produced by the solar cells (this was edited from the video