Abandoned mine exploration bot

While the other sites are all over this already, I thought I should weigh in on the new mine exploration bot (named Green Meanie), designed by Jessica Dooley and Keith Brock at the University of Arizona. The robot uses a 900mhz radio link back to the control computer outside the mine, and cost a mere $200USD to build (half of which went to the oversize RC truck wheels), not including the sponsor radios. The pair plan to explore a mine in the backyard of Dooley's grandmother.