Went out on a Christmas-gift-delivery-run yesterday with my sister in her two-ton Mercedes (dropping off custom-labeled bottles of wine to friends and prospective real-estate clients, like some R-rated Santa's elves). We've had very cold (for our area) weather and snow, ice, etc. for the last few days. Very slippery especially the side streets where the plows and sanding trucks don't bother going. Nonetheless she was convinced her car could manage any situation. So we started up a steep very icy street with me clutching the door-handle and her determined to make it. Fatal error: she stopped 3/4 of the way instead of soldiering on. We were on a narrow, one-lane street surrounded by parked cars, old garden sheds, and fairly steep drop-offs into people's yards. The car started sliding backwards, with the back end veering off to the left. She'd put it into forward and it would straighten out but not gain any upward mobility. Reverse, and off to the left it would go again. We came within a hair's breadth of smacking into a junk car but she managed to straighten it out again. Finally she managed to back it down to the bottom of the hill. She was insistent on delivering the wine though, after making it this far, so in slippery-soled boots, and only falling once, badly jarring her shoulder and chucking the wine into a snowbank to save it from a fate worse than death, she crept up the hill and back down. Of course, the lucky recipients weren't even home so she left it on the parch. By now, the wine's probably frozen, bottle broken, and their porch smelling like an old wino. We continued on our rounds for the rest of day with less drama, fortunately. Merry Christmas!