well I can also tell you the sat nav in sainsburys vans are not very good. They aren't very clear on roundabouts or any form of direction ahead. The icon that shows which number junction you are coming off is tiny. It doesn't even tell you what turning such as road name before either so you can use the road signs to decide which lane you need to be in. That looks like a large roundabout so it won't be very obvious on that. If the driver new or using that sat nav this would cause the confusion along with one faded and one clear line. When I first watched the video I didn't even see the faded line I saw the clear on and it appeared that is the correct lane. Once you highlighted the faded one I then understood this time the driver is in the wrong lane. This isn't a bad mistake, there have been far worse ones, posting this on YouTube won't help the driver when its likely they realised their mistake. I doubt they will do it again.