Download WGS84 and use SRID 4326 (note: bad! see below)

This is a Plate Carree projection:

> which simply maps latitude and longitude directly to x and y on the plane. Remember, any time you use geometry rather than geography, you are working with a flat coordinate system, and thus a projection. You might think you're working with latitude and longitude, but you're actually not

http://daniel-azuma.com/articles/georails/part-7
Refactor all Opendata tasks into a class with rake adapter
Merge branch 'wgs84'