The team has developed an algorithm that in their words is “limited only by the battery life of the quadcopters and the number of parts available.” Wow, what a

The team has developed an algorithm that in their words is “limited only by the battery life of the quadcopters and the number of parts available.” Wow, what an understatement. This is in fact the main problem. Motors consume a lot of energy - in fact electric motors consume more than 2/3 of produced electricity - this is manufacturing, transportation, even most of the electricity consumed by computers goes to power cooling ventilators. Electric Quadrocopters usually have flight times measured in minutes - and they carry a heavy accumulator, maybe a third or half their weight. And the picture of that quadrocopter lifting that block of concrete is actually funny if you have ever thought seriously about flying robots - where can I find those motors and propellers?