International Harvester Sightliner Toter, by the Whatoff Motor Company.. more rare than usual, this one has a variable wheelbase

customized by the Whatoff company: http://www.ameshistory.org/exhibits/whattoff5.htm
That cab, once seen never forgotten, had a remarkable 48" overall length bumper to back of cab, and the operator has the feeling that he is driving a window. In a very real sense, the driver is the first thing to get hit in one of these cabs, and they were not a commercial success for International.

Found on http://steampunkvehicles.tumblr.com/post/83580731459/whattoff-toter-with-adjustable-chassis-length

Both bottom photos from http://steampunkvehicles.tumblr.com/