Boeing 797's...
(not mine, from popular mechanics, or popular science magazines...)
I heard the "797" name is just a hoax/conjecture. The proper testbed name would be the
X-48. The pictures from PM are just an idea of what the X-48 could evolve into. I'd welcome such a future, since it looks like a pretty effective plane.
Nevertheless, it does look like the stereotypical "airliner of the future".
Kind of reminds me of all the futuristic planes you would gradually receive in Chris Sawyer's
Transport Tycoon Deluxe after you've entered the 21st century.
(Ah, I love that game. It never gets old.)