I've noticed at the GE that sometimes after lighting a path, when it returns from banking to light another path it'll go infront of the previous path, light once and then have to change lanes instead of initially picking a different path entirely. It's not too bad but it's sketchy when other people are training next to you. Hope this all makes sense.
Anyway - here's a a little progress report from using this bot for 5 days. Started at level 1 -