A United Airlines 787 Dreamliner receives a ceremonial wash as it arrives at O’Hare international Airport in Chicago, Sunday, Nov. 4, 2012, from
A United Airlines 787 Dreamliner receives a ceremonial wash as it arrives at O'Hare international Airport in Chicago, Sunday, Nov. 4, 2012, from Houston, after making United's inaugural 787 revenue flight. The aircraft is touted to be much more fuel efficient than any other similar plane and has a host of passenger amenities, such as larger windows, special lighting and filtered air. (AP Photo/Nam Y. Huh) (Nam Y. Huh)