"The robot was learning automatic movement algorithms on the testing ground, these functions will feature in the latest version of the Promobot," laboratory co-founder Oleg Kivokurtsev told ura.ru. "Our engineer drove onto the testing ground and forgot to close the gates. So the robot escaped and went on his little adventure."
The lab said Promobot only traveled about 164 feet outside of the gate, but it ended up in the middle of the road when its battery died.
Some have speculated the robot's escape was a stunt orchestrated by the company to gain publicity for Promobot, which is currently being put to commercial use by at least one business in the city.