Every weekday morning and some Saturday mornings, at very close to 6:30, there is a loud noise that sounds like the clatter of metal out on the street. It is followed a fraction of a second later by a vibration that shakes the walls of my house and feels much like a small earthquake. I presume it is a garbage truck driving at a high rate of speed over something buried underneath the road. But it gives me just an instant of scare anyway.
