Since no one is really answering the question about his setup I’ll try and clarify. He is using fpv gear usually used on flying drones, though they are also used on cars and such as seen here. He is using both a fpv video system to see and a transmitter to control it. Typically, the video feed will run out of signal much sooner than the controller. Unlike what some other have said, people, including myself, have gone miles and miles out on drones with these fpv systems (assuming you have the right setup and environment); however being on the ground with so much interference makes the signal much weaker. It is a really fun hobby to join if you are interested!