I was on chain control once, which is a lot of fun. Standing in the snow for about six hours, stopping everyone, letting the 4WD with M+S tires continue on (I dont' make the rules), making everyone else chain up. I would tell the 4WD'r to put it in 4WD and take it REAL slow, the road was very slippery. "OK" they would say, and off they would go at about 40 mph (this is Calif we are talking about). There was a left curve about 1/2 mile ahead, that is where about 90% of those mountain living 4WD drivers ended up off the road. For some reason some think that 4WD fixes all...