TheConcept car your refer to is IVAN. He is a test car and they put light rack on him for pacing stuff. He is not a cop car or prototype for one. The other car is a guy he used to be a sheriff deputy and they got to load up their car and use them. Not sure if he did not move to another law department or not.
2013 2SS, GM Strut Tower Brace, CAI Intake Black, VMAX TB, Elite Catch Can, Hotchkis Chassis Brace, Hurst Shifter, 3.91 1LE Complete Rear End, NPP, 1LE Track Pack,Factory Reproductions Style 41 ZL1 Fitment Wheels 10" on all 4 corners