We had a fair old dumping of snow (by our standards that is) a few years ago and I was at work in my Z. We left Lincoln slightly early, it was blowing a blizzard with already a few inches covering the main road. As you point out Roy many people have never driven ion snow and I have only driven in these conditions a few times during my life. So it was no surprise to have some idiot tailgating me out of town, totally unaware of what might happen in a sudden stop!. My only recourse was to keep stepping on the throttle thus making the rear end step out which eventually got my message across to him/her. As you rightly point out these wide low profile tyres make excellent snow shoes.
Tony.
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This was how I abandonded my car when I got home that night. It was 2010. I couldn't get out our drive the next morning.