Gigantic balloon-like objects floating in the sky, the successors to the Zeppelins of yore, are set to revolutionise the way cargo is transported around the globe by the end of this decade.
http://www.ummid.com/news/2011/September/04.09.2011/baloon_like_airships.htm
http://www.ummid.com/news/2011/September/04.09.2011/baloon_like_airships.htm