Ice bike

now it doesn't look much like bicycle weather, i know, but i've seen a few people riding bicycles around town. i've marvelled at their bravery/insanity. but while walking the dog, i met Tim, who runs the local bike shop--isn't his sign great?-- and he explained that he customizes tires for the winter by carefully driving screws into the rubber. this actually works, and the screws create spikes that bite into the ice, which means he can cycle along skidoo tracks and take off on long rides across the frozen river. i'm impressed, though i think i'll stick with my sled...