787 Dreamliner's weight-trimming tech for better fuel efficiency and lower operational costs than older 747s and jumbo jet competition from Airbus. We just hope it didn't inherit the 787's penchant for delays as well. If all goes according to plan, the new jetliner should complete the 600 test flight hours needed for FAA certification in time to deliver the first 747-8s to customers by the end of the year. We doubt airlines will use the plane's extra space to give us shlubs riding coach any more legroom, but at least its improved all-around efficiency should make flying a little cheaper. PR's after the break.