above from http://lecontainer.blogspot.com/
Above image via: http://www.greyhandgang.com/
Above images http://www.jalopyjournal.com/forum/showthread.php?t=229248&showall=1 which stangely, I posted about years ago... and that thread on the Jalopy Journal is still being added to
Above: the 1939 Sno Cruiser
For more on the Tucker Sno-Cats: http://justacarguy.blogspot.com/2009/07/tucker-snow-cat-pioneering-vehicle-of.html
Above: the Terrabus