What about on a hdr setup?
They didn't exist yet! (Was talking about GT5)
It's great in GT Sport, and amazing in HDR. The difference is that on SDR you can get blinded by dust/dirt kicked up by the player in front of you. The headlights illuminating the dust can make it hard to see the road. In HDR you have a higher brightness range and can look through the dust without it hiding the track beyond. And the Nordschleife looks great at night. (But only static lighting, in GT5 it got dark and light again)