"Elevate your stay." So goes the tag-line for the Hotelicopter, the world's first flying hotel. Onboard the largest helicopter ever built, you'll find 18 soundproofed rooms, complete with mini-bar, coffee maker and fine linens, plus an onboard spa (note the cruise ship-like interiors below). The comprehensive Web site earns points for realism with its photo gallery, very professional promotional video, background on the vehicle (Soviet made) and Facebook (over 2,000 fans) and Twitter pages to boot. You can even subscribe to the media mailing list (which we did; and receieved a "thanks for signing up" response). The site is really part of a viral marketing campaign designed by chic airport hotel chain Yotel.