That Name Again Is Mr. Plow

Alright, already! El Nino or the just rewards for our sins or a butterfly failing to or excessively flapping his wings somewhere in Asia have dictated that we have a million snow days this year. Our standard number of snow days per season is probably somewhere around .3. What is this so far? Five or so, at least? It's easy to understand that we don't have a snow removal infrastructure because that shit is expensive and .3 snow days per season just don't justify it, but where is the break even point? How many snow days a year are necessary to make the investment on some plows? It's probably more than we've had so far. It probably takes a month of snow days to make it worthwhile and it's not like we can count on even our relatively paltry five, but at some point the question has to come up: Is there anything we can do to make the roads passable after two or three inches of snow or are we doomed to closing the region down if any snow at all falls at sea level?