Please tell me this isn't true. I find it hard to believe that such an iconic television model has been destroyed so recently. From the Memory Alpha website:
While still in the process of being restored, the mock-up made an appearance at the "LagrangeCon '91" in November 1991 near Cleveland, Ohio. Reportedly a disagreement between owner and fanclub, caused the cooperation to cease in or shortly after 1993 and the owner had the craft moved to an industrial site for again open storage near Akron, Ohio where it has been spotted until 2008. The owner of the site lost contact with the owner of the mock-up, shortly after it was stored there and when the site went bankrupt in 2008, the mock-up was most likely destroyed during clearance of the terrain.
http://memory-alpha.org/wiki/Class_F_shuttlecraft
While still in the process of being restored, the mock-up made an appearance at the "LagrangeCon '91" in November 1991 near Cleveland, Ohio. Reportedly a disagreement between owner and fanclub, caused the cooperation to cease in or shortly after 1993 and the owner had the craft moved to an industrial site for again open storage near Akron, Ohio where it has been spotted until 2008. The owner of the site lost contact with the owner of the mock-up, shortly after it was stored there and when the site went bankrupt in 2008, the mock-up was most likely destroyed during clearance of the terrain.
http://memory-alpha.org/wiki/Class_F_shuttlecraft