As part for the "World Exhibition" in the "Forum Stadtpark" in Graz, Austria, my Rover R17 is running around in the museum whenever the visitors are locked out. It is set free around 17:00 UTC and is online until the batteries are discharged (after sunrise). So if you'd like to see what is going when its "Night at the Museum", go to the control page of R17 and have fun:

https://www.homofaciens.de/R17_en.htm