Video: Hennessey HPE700's LS9 is running

We recently brought you some pictures proving that the Corvette ZR1's LS9 fit well in the 2010 Camaro, specifically in Hennessey's HPE700. Now they have the beast up and running, and the sound is truly something to behold. Keep in mind the car is running with open headers, but it should still sound nasty with a full exhaust.