Drawing with GPS

Another thing that I have been interested in for a while is drawing via GPS. In a nod to the conceptual artists, I think it would be interesting to have driving or walking directions (ala google maps) act "as the artwork", and then when people traverse the rought provided, a GPS tracker creates various drawings. These drawings could even relate to places traveled to (local pet shops draw the shape of a fish) or be ironic in nature (us historical landmarks draws a shape of a dollar bill).

Below are a couple of videos that I have found in this regard...