It does not appear to be limited by the Wing-in-ground effect. This effect apparently tops out at approximately half the vehicle's wingspan; and they are above

It does not appear to be limited by the Wing-in-ground effect. This effect apparently tops out at approximately half the vehicle's wingspan; and they are above that. https://en.wikipedia.org/wiki/Ground_effect_(aerodynamics) https://en.wikipedia.org/wiki/Ground_effect_(aerodynamics)