Dave Parker's Sumo NXT: Reprise

My son built two of Dave Parker's Sumo NXTs, found here.

Two impressions:

1) The robots are as strong as tanks.

2) Dave's light calibration program works well--in eighteen sumo "battles", neither robot ever ran out of the ring by mistake.

The robots were filmed at normal speed. (The gray tint of the video is because of a darkened room, to avoid ambient light interfering with the light sensors).

Ten points if anyone can guess the title of the video's bombastic soundtrack. :)

Thanks, Dave!!