Urban cammo. If you wuz tooling along at 80 in your 'vette and saw a porsche crowding the rear sun deck, you'd probably boot the chevy a bit to open the distance. Then he's got yah over 90, reckless driving, lock up, impound... coupla days of doing that'll pay for the porsche in fines.
Did the same thing out here some years back with Mustang SVO's. County finally had the cops get rid of 'em.. some hotshot lawyer ripped 'em up.