Had an "interesting" commute home this afternoon, to say the least. First, I was riding downhill on the busiest road on a my commute (5 lane) and catch something out of the corner of my left eye, only to see a large tire and rim go flying past me. The wheel must have been traveling at least 30-40 mph and certainly would have taken me down if it had hit me, only missing me by a few feet. It hit a curb about 20 feet in front of me, bounced into the air about 10 feet and then continued rolling down the road. Shortly after that a school bus passed me very closely and then proceeded to force me to the curb. If I hadn't shifted to my right it certainly would have hit me. This is on a marked city bike route with no bike lanes, but plenty of "Share the Road" and bike route signs posted along it. Finally, some guy in a small compact car ran a stop sign in front of me, forcing me to hit the brakes. This was in my neighborhood, on a quiet street with lots of kids around. You gotta be careful out there!