This is why there are rules.
There are a lot of countries where passing on the right (we're talking about left-hand-drive countries here, obviously) is illegal. One of these is Germany, where this law even carries over to Nurburgring open track days. So in the video you're going to see, when the yellow Lotus goes to pass the black Ford Puma and everything goes wrong, it's on the Lotus. Things get pretty scary for a minute there, but it seems that everybody manages to keep their heads and there isn't a crash.
Things must have been especially terrifying for the driver of the BMW you'll see at the end. Watch the video and you'll know why.