This is pretty awesome indeed. A Boeing Dreamliner "drew" the numbers "787" and the corporate logo across several thousand miles of North American skies last Sunday. Gizmodo caught the plane in the act on FlightAware.
According to Boeing's vice president of marketing Randy Tinseth on the company's blog, "This wasn’t a joy ride. It was an 18-hour Maximum ETOPS (Extended
Operations) Duration flight test for a 787-8 with GE engines. Our team
coordinated with the many air traffic control centers, choosing the
routing to avoid restricted airspace. In the end, the flight covered
over 9,000 nautical miles - all of it captured by our friends at FlightAware."
This follows another etch-a-sketch drawing in the sky back in August 2011, when a 747-8 Freighter successfully completed it's certification flight test program by carving a giant "747" across the country.