Metra coming from the North Side to the Loop:
Passengers: Doctors, lawyers, accountants, veterinarians, counselors, and bank executives - Generally energetic, and in good health.
Advertisements: Cars, vacations, and clothes.
Metra coming from the South Side to the Loop:
Passengers: Construction workers, hotel workers, secretaries, and security guards - Generally lethargic, and overweight.
Advertisements: Sports, bank loans, and home foreclosures...
