I had a graphic demonstration of the benefit of my winter tyres this morning. 1cm of strange white stuff on the ground this morning, and my route to work includes a minor untreated road with a hill leading up to a junction. The road was covered with compacted snow glistening with ice in the faint light. The car in front was a W211 E-class saloon (sport - with nice wide 18" tyres). The driver appproached the hill too slowly and soon became stuck half-way up. Rear wheels spinning sending the car crab-wise on the road. He was going nowhere. I had kept a safe distance, predicting this might happen . Once I had checked the car in front was firmly stuck, from a standing start on the hill I just pulled out and around him (ESP off, comfort gears on). I can only imagine the thought going through the drivers mind. 'How come I can't and he can??'