Hehe, I see you are doing your homework Shin by looking at all the old posts
there is a lot to read on JW I guess.
The event was held in Germany, let's say 30 km north of Zurich to make it clear. It is a luxury/sport cars rental and it was an "open doors" day basically.
This year they had nothing planned, so I guess it was a one of :bah:
And it was really a once in a lifetime occasion, I need to thank st-anger once again to inform me about this
As for the Viper, the new SRT10 can indeed keep it's original exhaust and also the SLR has side exhaust afterall, so I guess something changed about them beeing banned around here.