The walking tree harvester, called PlusJack, was a development project by Timberjack (now part of John Deere) revealed in 1999. The machine never entered produ

The walking tree harvester, called PlusJack, was a development project by Timberjack (now part of John Deere) revealed in 1999. The machine never entered production due to high manufacturing and maintenance costs, as well as the speed at which it could cover ground. The prototype is now housed in The Museum of Lusto [1] in Finland (near bottom of page for pictures). [1] http://www.unusuallocomotion.com/pages/museums/museum-of-lusto-in-finland-forest-machinery.html http://www.unusuallocomotion.com/pages/museums/museum-of-lus...