Have read all of this thread now, makes interesting reading. Personally I found the Toscana challenge too dark and there is definitely the issue with the trajectory of the lights on slopes etc, but the bigger problem was you simply can't make out both sides of the track at the same time, which feels odd. Admittedly though it is a wide road, and I don't have personal experience of night driving at all.
Anyway, for anyone who is still struggling, I was too at first but I have a few tips I used which let me get Silver fairly quickly, will probably go back at a later date for Gold:
1. Learn the track. Unlike the rally stages, this course is the same each time, and there are only maybe 3 or 4 tight corners you really have to slow down for.
2. Get a good start, floor it from the off and take the Countach on the long, sweeping downhill left, keep control around the next tighter right and you should be up with the 512BB already, or passing it. The next 2 cars (Miura and F40) are faster though and will take a little while to reel in.
3. If you are struggling to see which way the track is going, I found it handy to drive mostly on the left side of the road, so you can see the white line at the side. Most of the bends are left handers. Also get used to looking out for the lights at the side of the road, you can see which way the track is headed when you see them going across in front of you (hard to explain but you'll see what I mean)
4. I must admit that I used anti-skid and ASM for this one, I use a controller and found the Lambo just a little too tail-happy, unlike the rally stages where it is far better to have them switched off. With the aids on you can still drift to some extent but do slow up for the tighter bends. If you are *really* stuck, use the driving line. I didn't have to resort to this though
