To make it in America, drone delivery will have to master a niche demand. Most of America that has customers is already well-served by logistics. The Postal Service can carry most things at low cost, and for faster shipping, retailers like Amazon will use shipping companies like FedEx or UPS. To make it in America, drones need to deliver a cargo within the same day, and because drones can only carry so much, they need to make sure they’re carrying a cargo that is both tiny and important. So what is it, exactly, that drones could deliver better, faster than anything else?