"A case study done by the Matternet team in Maseru, the capital city of Lesotho in southern Africa, showed that the entire 140-kilometer capital could be connected by a drone network for $900,000. “In contrast, the cost to build a 2 kilometer winding road is a million dollars."
http://www.huffingtonpost.com/2013/03/25/matternet-paola-santana-drones_n_2763088.html
Startup Wants To Replace The Postal System With Drones
www.huffingtonpost.com
Imagine a world where drones fly the skies -- but the drones aren't for warfare. Instead they're delivering packages, leapfrogging traditional infrastructure to create a world connected by tiny, nonviolent drones.
http://www.huffingtonpost.com/2013/03/25/matternet-paola-santana-drones_n_2763088.html