At three in the morning the lots along the I-81 and Route 481 interchange are the emptiest and most useful places in Cicero. That is when Commercial Lawn & Landscape, Inc. is out with the plow, pushing storefront and office parking clear and salting the walks so the first employee of the day never has to think about it. In the green months those same properties get mowed, trimmed and edged, the islands and strips kept neat where every passing car sees them. Commercial ground is judged in a glance through a windshield, and the work is aimed squarely at that glance. Winter or summer, the aim is to have the place ready before anyone pulls in.