Wow!
Kato-san’s new TETRA micromouse robot totally confounded competitors with his innovative ‘out-of-the-box’ design and record setting times during the early matches. Unfortunately the lighting conditions, or other unknown factors, defeated TETRA during the final Expert Class event.
Heres the search video he linked to in the comments: http://www.youtube.com/watch?v=OO3nB_H6Ytw
It speeds up as soon as it starts backtracking.