We were heading east and drove up the hill out of Pendleton into a thick fog bank and snow-packed roads. IIRC, it was like that all the way to La Grande. Everyone could see the tail lights in front of them and nothing else. We all were just praying that the guy in front didn't stop or go off the road, because we all would have followed him into a ditch or over a cliff.
That was white-knuckle driving at it's finest. We knew it was stupid to keep going, but we didn't dare stop or pull off.
I'll never do that again.