That city bike vid is fucking crazy. I'm amazed he didn't injure any pedestrians (he nearly got one) or find himself the meat in a two car sandwich. Then again, the video fades out with no real conclusion...
I'm not a bike guy but I did notice he seems to slip a bit when he lays on the power, is that because the road is wet or just a normal thing with the extra accel of a bike? I couldn't tell from the quality of the vid. If it's wet then he's 10X as crazy.
