Reliable Robotics has been working on Unmanned Aircraft Systems (UAS) since its founding in 2017, with a number of demonstrations for the FAA so far as it works towards getting the technology licensed. Most recently, it flew an unmanned Cessna 208B Grand Caravan with a pilot in a ground-based control center. This comes a few years after the company flew a Cessna Skyhawk 172 in a similar manner, demonstrating the functionality of its systems in a fairly small airplane.
From Cessna 208B Grand Caravan Flies Under Remote Control | Hackaday