While browsing through some of the thousands of awesome airline pics available out there I stumbled upon this one. A windowless Boeing 777. While I didn't see any interior I will have to assume that based on the lack of visible windows they must be made out of one way transparent aluminium. I first heard of this substance back in the 90's (I was too young to see the original premiere) while watching Star Trek IV: The Voyage Home. Scotty traded the formula for plexiglass to save humpback whales. While I know that was science fiction, many of the technologies from Star Trek end up as the jumping off point for scientists. It appears Boeing may have had some success in this allowing for a very sleek looking aircraft. Thumbs up Boeing this looks great!
Picture from: Drewski2112