I last tried it whilst waiting for the Inverness bus in Callander in 1974. The bus didn't come. It was a bank holiday and the bus didn't run that day, I found out after checking in the post office. The next bus was in a week's time. None of this endeared me to Irn Bru. Thank God for the hitch-hiker's thumb. I found out on that trip that you couldn't get a lift on Sundays. Probably still can't. I could tell you some stories.