Nice shots of the C-West Silvia. I've had that car for months and never got round to trying it out. I have to imagine the reversed livery is just to make the design symmetrical and consistent - also means the race team doesn't need to do any extra work to make the design fit on the other side... ie. if it works on one side, the mirror will undoubtedly work on the other.
I didn't like the Option Stream Z when I tried it, which was a shame seeing as it <i>looks</i> so interesting to say the least. I remember it being awfully slow to get moving - perhaps a little unresponsive, despite having so much power at its finger tips.
I think the Supra is great for having fun on the track. I find it to be one of the easiest cars to control when sliding (on sports softs no less), which makes the most mundane tracks more enjoyable.