https://www.youtube.com/watch?v=Lx-DCS-vQ6c
Above is closer to what Todd Palin was doing. Snowmobile (snow machine in Alaska) racing at night. (He crashed when it was dark). Although he was doing it on an extended day cross-country race - not a track like the above video.
https://www.youtube.com/watch?v=wW0Q1YoNFV4
Above is a better (and scarier) video of a snowmobile at night on a trail. Probably more like what Palin was doing.