I know the feeling.
A while back I got 'the look' from a Solstice driver (non GXP. Not that it would have mattered unless it was seriously modded). I shrugged it off and let him pass me (didn't want to waste the gas - ).
By chance I ended up catching up with it at the next light. I could see the cocky @$$ look in the rear view as I was behind it.
It took off from the light and I absolutely demolished it. As I was passing it, I squealed 2nd. LOL. It was ugly.