1987 would be right, I remember having to smash the ice to get into my car to drive home. There was a dip on the road between Herford and Bad Salfzuflan and when I arrived there the bottom was a mess of cars unable to drive up either way. Vorsprung durch Teknik, the Audi Quattro made its way through19787? Hat was when Wintex? Winter Sales coincided with freezing rain and a week long period when cars on the 4 ADSR square were covered in an inch thick ice coating.