In the world of automotive audio enthusiasts there are competitions called "sound offs." In their simplest forms, these are gatherings of cars with modified sound systems where a winner is chosen for a variety of reasons. The 2012 Camaro ZL1 doesn't have much in the way of a competitive audio system, but it doesn't need one. It has its exhaust.

With the 2011 Ford Mustang GT500 on the streets and Chrysler's SRT8 crew now out from the projects hangar, the sound off is ready to begin, muscle car style. Here's Chevy's entry. Judge for yourself.