All day long, cars pull into the driveway of the RecycleXpress center; car doors fling open, and conscience-minded citizens separate their colored and clear glass, bimetal cans, paper, cardboard and plastics (nos. 1 and 2 only, please) through square slots into great mounds. Even though some of them drive SUVs and many of them don't read the instructions and forget to do things like take the caps off their milk jugs, or flatten their cardboard boxes, at least they have the right idea. On the weekends, sometimes someone brings a kid along, but most of the time it's just single folks driving decent cars, passing strangers by as they trek back and forth from the car to the recycling bins. Okay, so we don't know if they're all single, but everyone seems to be checking everyone else out.