You can even go into space (well, not really).
Eliminating windows isn't simply a cosmetic improvement, either; it notably "allows for weight reduction, simplifies construction and opens up an enormous spectrum of possibilities for interior design", Davies said.
The lack of windows also opens up more eco-friendly possibilities, including "amorphous solar panels" that fuel "low voltage systems on board".
But the selling point is clearly the widescreen panoramas.
Until you can fly on the Ixion yourself (which could be a while, since this is just a proposal), take a virtual tour in the video below.