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Drove it about twenty-some years ago back when I was a member of the "Z owners club of Northern California" But even then they only let us do 1 lap.
Not quite as death defying on a bicycle but still pretty darned cool to ride around on!
It was pretty fun. Going down the Corkscrew at night was pretty fun. Two guys with adult-sized Big Wheels style trikes drifted down the corkscrew - I wish I had video of that.
I hope the night ride becomes a regular part of the show. I would love to do it next time around.