If I remember right the Blue concept Corvette in the above photo was 1st shown in, get this, May 1986 (Senior year in high school). I remember this because it was the first car magazine I ever bought. The May 1986 copy of Car & Driver cover shot. That issue had a test of the 86/87 Ferrari 328GTS, and I been a sucker for sports cars ever since. The concept car was called the Corvette Indy. I know I always kept that copy and it's probably a little worn, but I'll see if I can find it and post the cover.
Look closely at the wheels - they look about mid-80's in design (C4?).