Do you remember ? When you come back ten or fifteen years back, If I sayed to you : "One day me or you, we will be able to buy a drone, a strange flying object with full HD cam, we will be able to drive these with a simple remote, and with glasses we will be able to see what its camera sees." You would give me some change on the curb... But now this is real and the drones are more faster everyday ! Watch this race in a warehouse this is so impressive !