Man Scrawls World’s Biggest Message With GPS ’Pen’ | Gadget Lab | Wired.com
▻http://www.wired.com/gadgetlab/2010/08/worlds-biggest-writing
Man Scrawls World’s Biggest Message With GPS ’Pen’ | Gadget Lab | Wired.com
▻http://www.wired.com/gadgetlab/2010/08/worlds-biggest-writing