Westdeutsch Luftwerbung Blimp
In 1978, a German company, Westdeutsch Luftwerbung, moved its 180 foot-long flying machine to the United States, where it was leased by a consortium tentatively known as Skysign. The sides of the blimp are lined with 10,000 colored lightbulbs controlled by onboard computers, creating two 104 foot-long flying billboards. The blimp's powered by two 180-hp Rolls-Royces, cruises at 30 mph and never stalls. Its 211,888-cubic-foot, heli-um-filled envelope could carry it to 8,500 feet, but it's happiest within a few thousand feet of the ground-where its sign is visible to all.