A 50-percent model of Snowspeed in Toyota Motorsport's wind tunnel. (credit: Toyota Motorsport GmbH)

Did you know there's a speed record for gravity-powered snow sledges? It's currently held by bike racer Guy Martin at 83.5mph (134.36km/h). But perhaps not for long: over in Germany, Norwegian-based Snowspeed and Toyota Motorsport are working on a carbon fiber sledge...