Mar 162015
Another ebay auction presents a display model of a transport version of the McD Model 260 VTOL from the 1970’s:
A great many Model 260 variants were designed, all based on the same basic concept: an aircraft shaped much like a corporate jet, featuring a pair of turbofan engines of very high bypass ratio located in shrouds which could unfold to direct the thrust downward for vertical lift and hover. Unlike the Rockwell XFV-12, the Model 260 could probably have worked, but it was never built.