I've seen the same thing. Guys driving cars that are about the slowest things on the road pretending their cars are fast?
I had some guy in a neon with fart pipe and some strange paint job act like he wanted to race me in traffic. We were in bumper to bumper traffic and he wants to race? That just drives me crazy.
He probably told his Neon buddies he smoked a WRX because I just ignored him.