The office parks along Diehl Road hold acres of pavement, and an inch of snow across that much blacktop is a different animal than an inch on a driveway. Steve Miller Inc plows at that scale — clearing lots and drive lanes, opening entrances, running salt down the aisles before first shift turns in. Wind on Naperville's north side sweeps the open lots and rebuilds a drift in the same spot every storm; you learn where and you push wider. Work begins when the flakes do and finishes before headlights start swinging in off the road. When it goes right, the lot is dark and wet and nobody gives it a thought all day.