From Ministry of Tech:

Here’s DARPA’s latest innovation in the world of hi-tech military gear, it’s called the LANDroid. When soldiers let this run loose on the ground, it will find the best place to plant itself as a network hub. This is only a concept and the finished product should only be $100 for each, DARPA is accepting proposals by August 16th.

A pretty interesting idea, a creeping mesh network over a wide area.