Wired:

Using a combination of a GPS tracking system and visual recognition, the pair designed the camera drone to follow users wherever they went—like magic, without the need for a remote control.

And:

It seemed like his company was going stratospheric. The previous year, Lily Drone had enchanted Silicon Valley and beyond. In 2016, the Wall Street Journal put it on its list of products “that will change your life.” Balaresque and Bradlow were named in Fortune’s 30 Under 30. Facebook buzzed with excitement, and people eagerly placed $499 preorders, imagining the drone on family trips and skiing adventures.

But:

Just a few months after this presentation, by January 2017, the headlines had changed. “Drone Startup Abruptly Shuts Down.” “Is Lily Robotics the Theranos of the Drone World?” Lily Drones was now “hyped,” “collapsing,” and “failed.” Preorder customers bemoaned their losses on the internet. Those who hadn’t ordered gloated. In early 2017, the company declared bankruptcy and was sued by the San Francisco District Attorney’s office for false advertising.

Fantastic read, a real cautionary tale.