Jettas.... always Jettas, and not even a semi respectable GTI. Tinted windows helps ignore people though. I just drive around in "econo" mode most of the time. If someone is really persistent I hand them a schedule for autocross, and tell them street racing is about as ricer as it gets, and real drivers don't do it.
Had a porsche 911 challenge me one day, I told him he already won... made me feel good though.