I've worked with several Scottish lads during my career and the overwhelming majoity of them have the backs of their cars plastered to varying extents with stickers proclaiming "I'm SCOTTISH, by the way!". It only usually seems to be Scottish people that do this (I've never once seen an English sticker other than the St. George's cross on my own number plates), along with the odd Welshman or Cornish (Corn?) lad with the Kernow sticker.