I don't think there is a better example than the variation I am profiling right now. When it was first reported found, I did my customary inquiry, and after several weeks, I was able to secure a trade. And now that I have it in hand, it is instantly my favorite variation in the collection, just barely edging out the lace-wheel Cadillac CTS.
The Super Honda S2000 with "Real Rider Exotics" was first reported found by HWC member Wicket in Germany. That is the one I now have. According to Wicket, two others have been found, also in Germany. One went up on eBay, then was taken down, and now has been reportedly sold for just under $300. I only know this because I inquired about it as well.
So right now there are only three reported found, all from Germany, and all on "Hot Wheels Racing" short cards. I know of two mismatched wheel errors as well, also found on the short card.
As rare as wheel variations can be, it is almost unheard of to find one on a Treasure Hunt, let alone a Super Treasure Hunt. The Supers are already rare, and factor in a wheel vari on top of that, and the RREX S2000 is bound to be a upper echelon vari among those that collect wheel variations. Consider me VERY happy to have mine.
Since there is no report of this vari found in the US, I would keep my eyes peeled in Europe for any more...
Hot Wheels S2000 2012 Super Treasure Hunt with RR exotic wheels:
Paired with the normal "Real Rider GT" wheel version: