This year's All Japan Micromouse Contest has seen a mouse beat the 5 second barrier. The micromouse event pitches small robot mice against a 16x16 expert-class maze. Robot mice have to be completely autonomous and get a total of five runs of the maze. If things go as planned, the mouse will map the entire maze and figure out the fastest path in its first run. Once it knows the maze it makes speed runs to try to get from start to finish in the minimum time without crashing. The new record was set by Kato-san's blazingly fast TETRA micro-mouse using a highly unusual design with four wheels, each with their own servo motor.