Ryetronic’s Cold Weather Challenge is back! The full rules are here, but to summarize, it’s a contest for scooters (no motorcycles, sidecars, or three-wheelers) to determine who can ride 10 miles or more (distance is used only as a tiebreaker) in the coldest weather before February 28, 2007. Last years’ winner was Kent Messer of Ithaca, NY, who rode in -6.5Â° on December 14 2005. If you live in a sunnier climate, fear not, runners-up are grouped by state. The Cold Weather Challenge is sponsored by Crafty Planet, who reminds you to knit responsibly this holiday season.