Today, whilst waiting to enter the Junction 14 roundabout, on the way back from Eccleshall, I was prevented by a line of cars streaming down from the motorway - fair enough, that's how it works.
The last car was an Audi, some way behind the rest of the queue, but arriving at speed (of course) - and it was indicating left - honestly, it was, the indicator was actually on, difficult though that may be to believe.
I was so startled by this unique occurrence that I was unable to put my car into gear, release the handbrake and pull out onto the roundabout.
Which was just as well, really, as he was indicating left to go up the link road to Redhill.