Clippers reach Northville from the west, dropping down over the townships with three or four inches and almost no warning. Denny's Landscaping listens for that and turns the truck over at two in the morning, working the cul-de-sacs where a plow has to think hard about geometry. Plowing, clearing walks, spreading salt — all of it aimed at the moment a garage door goes up and there is simply nothing in the way. Headlights, a swirl of white, the scrape, the backup beeper, then quiet and the next street. Service runs through Northville and the towns west and north of it.