The "fake undercover cop car" type of carjacking/robbery has existed since forever. It's why "thou shalt never use unmarked cars for traffic enforcement and ot

The "fake undercover cop car" type of carjacking/robbery has existed since forever. It's why "thou shalt never use unmarked cars for traffic enforcement and other 'officer chooses who to bother on a whim' duty" rules come and go from various jurisdictions over time. People get carjacked/robbed -> policy created -> desire for revenue mounts -> nobody been carjacked/robbed in awhile -> policy rescinded -> go to beginning