Implicit in the popular conception of the drone is that it be unmanned, but what we really mean is that its pilot is not on board the aircraft. But an autonomously guided or remote-piloted vehicle that carried a passenger would still fit most working definitions of a drone. So that begs the question: if you could, would you be that passenger? Because it is no longer an academic question. As the following video demonstrates, the technology is already here. And as guidance, stability and power systems improve, sooner or later it will be a viable option. Here are 5 vehicles that can already do it.