Got called to plow drifting and sand one of our residentials yesterday. Sanding is "on call" for these folks so it wasn;t our fault it had gotten this bad. Driveway is black stone and the cold air and good sunshine the past few days had melted snow that drifted on and made ice. The last 100 yards are the worst, VERY steep. There was intermittent drifting across this bad area. I tried plowing uphill with the S-10 with both front and rear plows and was unable to push uphill so i tunred around and pulled everythign down and off to the side. The ice was smooth enough that with both plows down and the brakes on the truck would slide downhill, out of control.