BOEING 747-8 (N6067U)

Taken on the tarmac tour of Boeing Field, which is an option when visiting the Museum of Flight (I HIGHLY recommend it!). As for the aircraft I am not too sure what it is being used for, however it appears to be a partial Lufthansa livery and 'Experimental' is stenciled above the door, it could possibly be part of the Performance Improvement Program for the 747-8.