ANY GUESSES?

I saw this at the track from a ways away.......wondered what it might be.  I made a couple of guesses...both were wrong.  I actually went all the way up there just to see what it was.  Any Guesses? Anyone actually know?
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I'll wait a day or two to see what offerings are made.....then I'll add another shot which will identify this beauty.
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BEST IN LARGE.
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I knew it wouldn't take long before someone tagged it......where were you when I needed help?   lol   For those interested, you can find info here:  https://www.bmwusa.com/legacy-vehicles/i8.html