Watching that video again triggered my memories as a teen of my friends and I driving on forest service roads in the Tillamook forest one day when it had snowed.
Me in my Baja, one guy in his 1970 bug (same year as my Baja was), and a friend in a little toyota 4x4.
We did a small VW rally race after the toyota truck went ahead to make sure no one was on the forest service road that had about 2" of snow on it.
It was a blast but we were not going anywhere near the speed of the VW's in the video.
I did manage to crack a fiberglass fender on that trip