If you grew up in a snowy climate, chances are you’ve ridden a sled or toboggan when you were young. The downhill part of sledding is great fun, but dragging the thing back up gets boring quickly.

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. JEFFERSON COUNTY, Colo. (KDVR) — Colorado ...