NASCAR Events in Texas Are Now Guarded By Devices That Take Down Unauthorized Drones Gizmodo That's a legitimate concern, given that the growth of the drone hobby has also been associated with an increase in people flying them where they shouldn't, and that the last thing anyone needs is a drone plummeting into a pack of cars going 200 miles per hour. But one might also speculate that sporting ...  Virus-free. www.avg.com