Basically a ripoff of the robot-butler concept, replacing the wheels with rotors. In 1984, the TV series Riptide already had a robot serving drinks: https://www

Basically a ripoff of the robot-butler concept, replacing the wheels with rotors. In 1984, the TV series Riptide already had a robot serving drinks: https://www.filmaffinity.com/es/movieimage.php?imageId=981095032 https://www.filmaffinity.com/es/movieimage.php?imageId=98109... Robot butler pic here: http://bearbottoms1.com/smart-homes/ http://bearbottoms1.com/smart-homes/ One might argue that rotors and wheels are similar in nature since they both are a rotating device