This looks like an interesting idea. From "The Australian":
US plane-maker Boeing is striking a blow for the common air traveller with a novel proposal to introduce beds for economy-class passengers.
The aerospace giant is talking to airlines about a new version of its successful jumbo jet and a proposal for the installation of bunks in empty space above the passenger cabins.
The company's "sky suites" would offer up to 14 first-class, 24 business-class or 40 economy-class sleeping berths in the overhead space.
Full article here:
Boeing finds room to go flat-out