Lilium – Electric vertical take-⁠off and landing jet
As a pilot I would never step foot in this thing. The thought of being in an aircraft with zero aerodynamic control, or ability to glide in a dead stick situation is a complete nightmare. It doesn't matter how redundant your systems are if you have a fundamentally unstable airframe with no yaw control. In a total power loss situation, you must have some type of glide profile. All other forms of aircraft have this. Such a design would be fine for drones, but this will never carry humans.