def to_lat_lng
      if instance_of?(Geokit::LatLng) || instance_of?(Geokit::GeoLoc)
        return self
      end
      lat = send(self.class.lat_column_name)
      lng = send(self.class.lng_column_name)
      LatLng.new(lat, lng)
    end
def to_lat_lng
      if instance_of?(Geokit::LatLng) || instance_of?(Geokit::GeoLoc)
        return self
      end
      lat = send(self.class.lat_column_name)
      lng = send(self.class.lng_column_name)
      LatLng.new(lat, lng)
    end
-----------------------------------------------------------------------------------------------
 Instance methods below here
 -----------------------------------------------------------------------------------------------
 Extracts a LatLng instance. Use with models that are acts_as_mappable