The biggest drawing in the world created by GPS and DHL

There are all sorts of creative uses for GPS, but here's a fellow who says he sent a self-designed GPS "device" in a briefcase to DHL with express travel instructions. He plotted the shipment's movement and ended up with the drawing you see above. We're a bit confused. First, he says he developed a GPS device with extended tracklog and battery time. Okay, but... using what, exactly?

Also, we've received some things from DHL, and we have a hard enough time just getting them to deliver stuff to the right address, let alone make circles in the Caribbean in the name of art. To be fair, his documentation looks complete, so serious kudos to him if this is all for real. Peep the travel instructions document that he says he gave to DHL along with shipping receipts and video after the break.