> I think Europeans may not really get how big some of these places are until they experience it first hand
Conversely, I think most Americans don't get how big the UK is, or how much longer it will take to get around than you think.
Look at a map of Scotland. If you start at Glasgow on the west coast about a third of the way up, and drive to Scrabster, the northern end of the A9, that will take you at least 9 hours too.