There’s the Vusion Extreme, and then this custom-built FPV racing drone, which is being touted as the world’s largest. Built by the guys at FliteTest, this drone uses a Vector flight controller, and was upgraded from two 12,000mAh batteries to dual 26,000mAh batteries, which proved perfect for the flying beast. Unfortunately, the giant GoPro camera you see is just for show, but underneath it, is the real one. There currently isn’t a racing class for this in official competitions due to the weight restrictions. Click here to view the first image in today’s viral picture gallery. Continue reading for the five most popular viral videos today, including one showing how an automated 3d-printing factory runs.