He was out of site by the time I collected myself. I was riding through a narrow alley on a fixed gear. I thought I was going down for a minute. The feeling was the same as if someone had hit my front rim with a fastball. We collided hard enough for blood to be left on the rim. Perhaps I should have included that in the VO Product Review thread. "PBP rims: tough enough to withstand a bunny at full speed."