Three in the morning in Davison, and M-15 is a tunnel of headlights and falling white. That is the hour 20dollarPLOWING keeps — after a clipper has finished crossing Genesee County and left the driveways buried in dry snow that squeaks under a boot. The blade goes down, finds pavement, and by the time the coffee makers click on in the kitchens along the side streets, the way out is already open. There is real pride in that: a clean apron of concrete, the curb cut squared off, a path to the road nobody had to think twice about. Michigan winter never asks permission, so the answer is to be out ahead of it.