I have seen a yellow Chevy Cobalt in my neck of the woods a couple of times which has a lot of black highlights similar to my car (black hood, black spoiler, black fender hashes, black rims, etc.). I finally spotted the car in a parking lot the other day parked across from my car.
On the rear window of the car is a decal for the website CobaltSS.net.
The Amazing World of Don Dueck 