Maybe I've been watching too much BattleBots...but are those Velcro-like pads (on the top of the robot) attached to a cam on the motor that makes them shuffle?
Then I s'pose those white shock absorbing legs could pop up the shufflers when side-to-side manuevering is needed.
Cool stuff from team 71 as always.
Dan
PS check out the high-res at
this link.