AT&T just tested a flying cell tower, and it could change everything

Regardless of where you live, you probably have a really good idea of what sections of your city, neighborhood, or rolling rural hills offer good cellular reception. Driving through a well-known "dead spot" is like venturing through an invisible barrier into a dangerous land, and unless your carrier upgrades their hardware in the area — which is often a rarity — a bad coverage area isn't going to suddenly become awesome overnight. AT&T just tested something that could c