Physics Problems Get Tested by Drones

A drone is hovering in an elevator. The elevator goes down. What would happen to the drone? Alternatively, the elevator goes up. What happens to the drone now?

Make your prediction and then watch this video.

Of course, this is a sequel to what happens in a car. 

Or the even more famous, problem about truck carrying pigeons on a bridge.

I love when famous physics problems get tested in the real world.