Designed by Russian architecture firm Arch Group, the Sleepbox is almost exactly what it sounds like: a seven-feet-deep, nine-feet-high pod made for people on the go to sleep in. Beds (a maximum of three), bedside tables, electrical outlets, and reading lamps come standard in the Sleepboxes, but they can also be outfitted to include WiFi, televisions, and an alarm clock. In all, they're cozy little temporary homes to use until you reach your real home.
The first Sleepbox is now up and running in Moscow's Sheremetyevo airport.
They do have shades, so I suspect they'll be used for more than just sleep during layovers. More information, and a photo of the interior.
I find the Sleepboxes considerably more appealing than those Japanese capsule hotels that look like kennels.