We're driving through County Durham, it's a beautiful day and were heading to a lovely village for afternoon tea and ice cream for the toddler. We're on a National Speed Limit road, single lane, stuck behind a horse box doing 23mph. There are 8 cars in front of us also stuck behind it, and I can't see the back of the queue. It's been like this for almost half an hour - AIBU to think it would be polite of the horse box driver to pull the fuck over every now and then to let the queue pass?!