... posted by Scott Lowther at 'the unwanted blog'. Seems to be a Really Big snow-tractor that would crawl across the Arctic waste and poop out a couple of ICBM's when the big-one got started. Novel solution to idea of mobile missiles are harder to target; except it seems like it would be visible to satellites and couldn't travel very far in the ninety minutes between reconnaissance passes.
Vroom, vroom! "Can't you get this thing above 10mph!"