I almost never drive to work in the city (San Francisco) at regular commute hours. I go in at midday, usually, and return home well after the last of the evening commute. But today I drove because it was the day before the holiday and the morning rush hour was light. I waited a little too long to start home, till almost 3:30, and this is what happened: a long (but standard) jam on the western approach to the Bay Bridge. The stop-and-go and merge after merge after merge slows you down so you can reflect on why you love living here.