Mines definatley going the wrong way!
No they aren't, I work in the Water/Wastewater business and I know the layout of the sewers roughly round here. I think it has the addresses of sewage treatment works stored and plots a route to them. Doesn't always get it right though as the sewage works here is only about a mile away, decided it wanted to follow the M8 motorway and head 8 miles up the road into a Glasgow sewage works.