Traditionally the domain of small children celebrating a snow day, sledding is slowly working its way up to a serious snow sport akin to skiing. About a month ago, we covered the US$3,000 Snolo Stealth-X carbon fiber sled, and now we have another high-tech sled built for serious downhillers. The Snowbull is an Austrian-designed sled that uses high-tech components for a sharp, fast ride.