Drones in Aisle 5? Grocery stores are becoming unusual hotbeds of innovation

https://www.washingtonpost.com/news/powerpost/paloma/the-technology-202/2019/05/03/the-technology-202-drones-in-aisle-5-grocery-stores-are-becoming-unusual-hotbeds-of-innovation/5ccb371c1ad2e506550b2f0d/?utm_term=.6bb6ecd330b9