It's an interesting design. I know they're trying to reduce losses associated with vortex shedding at the wing tips, but it looks like this would be a difficult plane to manage. It has a huge horizontal cross-section, so it's going to be much more at the mercy of turbulence, and storms/high winds/jet wash are going to have a much higher probability of flipping this thing while stationary. Also the engines are up too high. High thrust is going to push the nose down (see: 737 Max). I wonder why they didn't decide to mount the engines in a more conventional position under the winds?