In 20-yrs of commuting 3-hrs per day to work, I was one of those who paid an extra toll for the car behind me, a way of paying A Good Morning forward. Now that I telecommute, I don't get a chance to do this. BUT I do get to help someone whose parking meter is running out. With hefty fines in my neighborhood, I often keep a few quarters with me to insert in the meter during mid-pm walks ;)