We got a new pair of Zipfy sleds. They are marketed as "personal luges." Machine mortelle is a better description. They are really, really fun. Only two small injuries ... my left cheekbone got whacked, and Whitney probably bruised her bum.
We raced, and Whitney veered off into the guardrail while I drove my sled straight and true toward my wife, the camera operator.
Do not try this at home.