While his wife was out-of-town [James] jumped at the opportunity to do some snooping around with her Chevy Tahoe’s parking ... from the four bumper-mounted ultrasonic sensors.

Four radar sensors are included, as is a system computer module and visual display unit. The external bumper-mounted parking sensors are available in a variety of popular colors for discreet ...

While the primary mission of these minicams is simply to provide a view to the rear while you're parking ... any camera system is more informative than a mere proximity sensor.