Gumshoe Bot

ACE, Autonomous City Explorer, isn't really a detective, it's... well, a city explorer, but a different sort of city explorer from this guy
When picturing a robot rolling around Munich for five hours asking for directions my imagination can't help but add a trench coat, fedora, and world-weary face with a cigarette hanging from it.
The true test for this robot is when they build another one and have the two search for each other.