An ice storm hands Ann Arbor a strange beauty and a genuinely mean commute — every branch along Stadium Boulevard glazed and glittering, every driveway apron a slick. DBI D'Brothers handles the winter side of that: plowing, taking walks and entries down to bare surface, salting the aprons and the shaded curves up through the Ann Arbor Hills where the sun never quite arrives. Headlights, an early hour, a route in a fixed order — that is what the season looks like from inside the truck. Snow here comes three inches at a time or fifteen in a night, and either way the drive has to be open. Getting people out on time is the whole of the point.