787 Dreamliner, which has airlines all aflutter over promises of increased fuel efficiency, has been delayed yet again. Boeing announced yesterday that customers can expect to see the plane in the third quarter of 2011: one in a long line of setbacks that have put it three years behind schedule. However, despite delays, it seems customer confidence hasn't waned. In fact, the New York Times reported that 787 buyers still find a summer release perfectly practical, leading to a three percent rise in Boeing stock. Trouble for the 787 started back in 2008, with the FAA warning of hacker vulnerability, followed by a 2009 discovery of structural weakness, and an on-board fire last November. Even with delays, and cancellation of at least 60 orders, the 787 still has about 850 pre-orders: more than any other mid-size commercial liner in history. So what's keeping the 787 Dreamliner afloat? Well, mostly promises of a 20 percent increase in fuel efficiency, thanks to a design that's 50 percent composite materials. Clearly, testing the 787 hasn't been a dream, but it seems nothing can keep this plane grounded for good.