Well done, great job. Would a little bit more light mess with the sensors? I can't see much in the videos... With full contrast I can recognize your bot but still not see too much. (my digital camera has the same problem and the light in my room is too dark to compensate..)
But it's a bit like all those UFO recordings. We can't be sure if this is real. Might all be a big conspiracy of a foreign government to make us believe that foreign bot-technology is far more advanced than our own