This seems like a good idea and a near perfect adaptation of existing equipment. Lawofficer.com reports that The Dodge Charger Pursuit will have some new features. See Dodge Charger Implements Ambush Detection On Police Cars.
Dodge worked with California-based vehicle control systems-maker InterMotive to repurpose the car’s rear parking sensors and backup camera to sense a person approaching from behind. If detected, the vehicle will flash its rear lights, lock all doors, roll up the front windows and display a video feed from the backup camera to the driver.
Blue lives matter.