Electronic ignitions and vehicle-tracking systems make it tougher for thieves to get away with jacking parked cars. Now Cadillac offers automatic surveillance video that triggers the parking cameras if someone gets too close to a new CT6.

On most new cars that employ multiple cameras and combine their feeds into a 360-degree image, the quality is usually decent enough to show curbs and bumper edges without stepping outside. When the CT6 is “disturbed,” according to General Motors, all four cameras silently record footage to a trunk-mounted SD card that can be later replayed on the CUE infotainment system?or downloaded to an external device like, say, a local police sergeant’s laptop.

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There’s also a dash-cam mode that will record video simultaneously from the front and rear cameras while driving. Unlike the Corvette’s Performance Data Recorder, the CT6 won’t overlay speed readouts or G meters on the screen. It also won’t record valets as they take your car for a joyride, as the Corvette system can. But the Corvette doesn’t have the CT6’s optional trick rearview mirror that doubles as a high-def live video screen. The recording system is standard on all CT6 models save for the base models, which don’t offer Surround Vision as an option. Wiser thieves will either wear full f...