GPS art with kilometre marks tracing out a cat on the streets of Cambridge by CMG Lee. The base map is from http://commons.wikimedia.org/wiki/File:Cambridge_UK_ward_map_2010_coloured_on_Cambridge-Openstreetmap-08-06-13.svg .
Cambridge UK ward map 2010 coloured on Cambridge-Openstreetmap-08-06-13.svg
cmglee, OpenStreetMap contributors