Minnesota Public Radio slideshow:
A new generation of crash avoidance devices aims to save lives
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The Kenny's Cadillac has an ultrasonic transmitter and receiver in the bumper which sounds a chime warning them of objects in back of the vehicle (MPR photo/Dan Olson)

The Kenny's Cadillac has an ultrasonic transmitter and receiver in the bumper which sounds a chime warning them of objects in back of the vehicle

(MPR photo/Dan Olson)
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