2015 Boeing ecoDemonstrator 757

The Boeing ecoDemonstrator 757 has begun several months of test flights to evaluate new technologies to improve commercial aviation’s efficiency, reduce noise and carbon emissions. Boeing is collaborating with TUI Group and the National Aeronautics and Space Administration (NASA) on ecoDemonstrator 757 tests.

See: http://www.boeing.com/features/2015/04/bca-757-ecodemonstrator-04-08-15.page