A buddy of mine has a '86 (I think) ASC McClaren convertible Capri. They made them from both mustangs and capri's.
It's not really clear from that picture, but like someone else said, the windshield is angled back noticably, I think around 15 or 20 degrees. The interior in my friends was also different I believe, it had different leather seats and I'm pretty sure they had McClaren embroidered or something.
I think they also came with modified suspension, but it's really been a while since I've looked into them. Other than my friends, I can only recall seeing one other McClaren driving around, and it was a Mustang.
That definitely does look like it was taken at the Roundup. I park in that lot every day for school. Well, for 2 more weeks anyways.
Jeff