Slightly related, but here's a recent article on a "Drone That Can Fly Continuously For 5 Years". I think this was submitted recently and didn't take off, but i

Slightly related, but here's a recent article on a "Drone That Can Fly Continuously For 5 Years". I think this was submitted recently and didn't take off, but it's pretty interesting: http://lasvegas.cbslocal.com/2013/10/07/aerospace-company-develops-drone-that-can-fly-continuously-for-5-years/ http://lasvegas.cbslocal.com/2013/10/07/aerospace-company-de...