Back when I had my '03 Cobra, neighbors a block or two away walking along the street would constantly flail their arms up and down for me to SLOW DOWN. Didn't matter if I was doing 20, 25 or 30 (speed limit is 25). The loudness of my exhaust signaled to their "brain" that I was speeding. One time I stopped, rolled down the window, and yelled "do you have an issue"? The response was "yes, you're speeding, so slow down". To which I responded, "I'm not speeding, I'm doing 25 in a 25. If you don't like it or think I'm speeding then call the police." The police were never called, but again, I always got gestures or angry looks.