The max speed is 40 k/h - I'm no expert cyclist, but what happens when you go 60, 70, 80 down a long hill? Can the Lily catch up to you, and up until how far? What happens if it can't?
It would get left behind. It looked like there is a little handheld GPS/wifi beacon used for follow me. My guess is RTL (return to launch) as a failsafe once you get outside wifi range
