The GPS functions deserve an entire article, but to summarize them quickly, they are amazing. Once you calibrate the GPS compass, a world of unique functionality opens up to you. First, you taxi out and set the starting point, which is acknowledged by the Cub zipping the control surfaces. You can set a small or large fence area (150m or 250m), and when the Cub reaches that distance, it will turn around and come back. If you get disoriented, you can press the button and the Cub will immediately fly to and orbit the home point until you take over again. If you set it on Airfield mode, it offsets the orbit point out over the flying field so that it doesn’t fly behind you over the pits, which I found to be a great touch. When you’re done, press the GPS button and the Cub will land itself. I was skeptical, but when I tried it, the Cub hit the runway three times for a successful landing—and once, it was straddling the centerline. We sure have come a long way!