For about a 1/2-mile stretch on Lake Cook Road headed Westbound, the speed limit is set at 45, but since there are no cross-streets, traffic sometimes gets moving up to 65mph. Once you cross over Milwaukee Ave and start descending from that bridge, there is an office building on the right-hand side. The entrance has a tree divider behind which a cop will usually sit. You can’t see him until you pass him. So just stick to 45-50mph from the bridge on…