Never mind vending machines, it's the self-service checkouts in supermarkets that get to me, massive queues everywhere when I went in today so I thought I'll put aside my (rational and totally justified) hatred of the things to save a bit of time. Did that work? Did it hell, I spent the first 5 minutes waiting for it to stop saying "unexpected item in the bagging area, please remove" - which would be fine except that there was nothing there whatsoever, there wasn't even a sodding bag sitting there. Then after the palaver of scanning, getting authorisation for buying a bottle of wine and all the rest it decides that it doesn't like my money. Progress? You can keep your @$^¬#*! progress.