Turn 4? On the Test Course? The track with only two turns?
Yes, anyway. Long noted minor detail, and a supershine car isn't even necessary. There's a reflection of a dotted line on your car when approaching the second turn, even though the line on the road is solid. There's also a reflection of a solid line on the car in the same area (a little later) when there's NO line on the road. If you're really observant, you'll also note a different colour line, closer to the inside of the track, reflected on your car when there's no line on the road too.
What next? The painted lines on the road on hills sometimes go through your car (SSR11 - check it out)?
The game's been out 3 years. What are the chances of you finding something NEW about it that no-one else knows?