Some useful links for those who wish to develop their own version of this robot:
A great source for all electronics components, fast shipping and all prices in Canadian dollars makes this an excellent source for all component needs.
A Canadian company specializing in robotics sensors and components
Another great source for sensors
HERBACH AND RADEMAN
Supplier we purchased the DC drive motors from, they have a great selection of surplus components
Most of the drive train components were purchased from princess auto. Shipping was a little slow, but the prices can't be beat.