Years ago when I was a freshman in college, one of my classes was taking a winter camping trip. The plan was to ski in while three people drove in with the gear. My sister and I were elected as drivers, since we had our parents' huge Chevy Suburban and were used to driving in snow and ice in monster vehicles. She drove one of two 12-passenger vans, and I drove the Suburban (none of the three vehicles had 4-wheel drive). Our leader opted for the more direct but less maintained dirt road that went over a huge winding hill for driving the stuff in. The road was covered in snow and ice, and about 2/3 up the hill, the van in front of us could not make it up. Which meant we all had to stop, and since there was no room to turn around, we all had to back down to the bottom (maybe a mile or so). I was quite good at backing up as was my sister, so we started down. The van in front of us got stuck in a ditch, and shortly thereafter, my sister. Since I was the bottom-most vehicle, I suggested pulling my sister's van downhill and out of the ditch by hooking a rope to the Suburban, which we tried. All that availed was to make my Suburban swing into the ditch as it tried to pull. Now we had three very large vehicles stuck in a ditch with 3 people total to try to get them out. Fortunately a couple of local guys happened by and after about an hour and a half of tugging, pushing, and being incredibly ingenious, we got all three vehicles out. We took the other route to camp.
Oh yes - once we got to camp my sister and I donned our skis and headed out to meet the group coming in. Going down a hill, I snapped on of my old wooden skis in half. My sister - she's great - swapped skis with me and very effectively skied on one ski for the rest of that day as well as the next.