Did it look like this:
http://www.cartercopters.com

If it was, I have seen them fly at OSH, and it is a really neat autogyro.
Yep, thats right, autogyro!

They built the CarterCopter a half mile down the street from my house.
I've seen it up close and personal at KONY but didn't get to see it
fly however, it had some kind of cooling problem that day.

A neat piece of engineering fer sure!

Neal - (in Wichita Falls)