Drivers on New Jersey highways may see the newest car patrolling the roads. Then again, they may not.

New Jersey State Police have unveiled "ghost cars" as their newest tool to catch unruly motorists. The black Chevrolet Caprices appear unmarked from far away. But a closer examination shows a faint gray State Police emblem on its sides.

State Police spokesman Capt. Stephen Jones says they're trying to avoid notice on the highways so troopers can catch dangerous drivers who behave in the presence of marked cars.

He says the cars also give drivers peace of mind that they're talking to actual troopers and not someone masquerading as an officer.