People may also be misled by how comparatively quiet electric cars are in an urban/suburban environment, and expect electric flyers will be similar (assuming the battery problem is solved.) This view overlooks two things: 1) a VTOL flyer would be at maximum power at take-off and landing, and at a high power level in cruise; 2) a lot of noise comes from the propellers or fans, and there is not much scope for reducing it.