They most certainly do exist!!!!No I'm not arguing the science, I'm just saying i personally wouldn't bother with winter tyres (if such a thing exists) we're not rally drivers after all and our casual climate is hardly "extreme". Here's the frozen sea/river (meet you half way, it's the estuary) and the Panda in the snow.
http://mytyres.co.uk/Winter_Tyres.html
As I said the reason why the Panda handled the snow so well will be because of the skinny tyres. Take your Abarth up a similar road this year and you WILL be stuck.
You're arguing against the science and facts again