+1 for Portsmouth and its 200,000+ habitants which all live under the sea according to the live map. The whole of the city is not on land!
Sure, it's only like that on the live map and not the mobile client but its still a poor show really when you consider the level of accuracy we try to map to. It doesn't encourage new comers / general users to utilise the full Waze experience (like checking the live map for traffic before you head home from work).
Area Manager - southern Hampshire / W.Sussex, UK