Home grown mid-engined competitor

[PaulE]

Of course it's a Corvette. Ferrari isn't going to test the car's ability to handle drive-thru windows or cup holders for super-sized drinks!

[bwdz]

I've been to the Milford proving grounds many times and live about a half hour from it. Seeing these masked cars in Detroit area is a normal occurrence. If you look at the one pic it looks like in the background is the front end of a Porsche, a yellow R8 or something in the parking lot next to another masked vette just like that. They must be getting close to production to run them with so little guise.
I was at the Ford Rotunda plant, the one that has the test track, like 2 years ago and they were running the Ford Gts on it and they weren't even masked but painted in ugly camo colors just before they came out.