Daystar: believe it or not, I saw one in person, a couple of years ago. I was heading to my Dr. for a visit - ***** pressure check, maybe? There is a European Engineering .. service vendor at the intersecting road. They typically have an assortment of various heritage Porsche 911s parked outside. As I drove by, I saw a Mercedes-Benz CLK GTR in the showroom. I had no idea what it was, as I drove by - but I was going to stop in and check it out, on my way home.
I had never been there.. The showroom was unlocked. I went in and checked out what they had, including the Mercedes-Benz CLK GTR. It has a plaque .. above the gearbox, with the sequential number of the build. I took a few pics with my cell phone. A worker came out and saw me, and asked what I was doing. He was adamant that I not post the pictures on any social media. I told him I didn't have any SM accounts. And, the buddy I was going to share them with is over 70, and doesn't have any, either!
I didn't realize how rare it was, until I got home, and researched it. Yeah - $10M+ are the valuations I saw!