3 ms·
Yes. http://www.popsci.com/watch-umbrella-drones-float-through-air http://www.popsci.com/watch-umbrella-drones-float-through-ai...
by joakleaf 10y ago
Yes. http://www.popsci.com/watch-umbrella-drones-float-through-air http://www.popsci.com/watch-umbrella-drones-float-through-ai...