In a photo from July 18, 2013, a new surveillance system that displays on the rear view mirror in police cars automatically sounds a chime, locks the doors and rolls up the windows if it detects

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In a photo from July 18, 2013, a new surveillance system that displays on the rear view mirror in police cars automatically sounds a chime, locks the doors and rolls up the windows if it detects someone approaching the car from behind. It was developed by Ford engineer Randy Freiburger who works with police and ambulance customers to make sure the company's vehicles are meeting their needs. (AP Photo/Carlos Osorio) less 

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Associated Press
Sat, Jul 20, 2013 3:18 PM EDT