PLYMOUTH, Minn. -- A Cub Foods store here, a franchise of Cub Foods, owned by Supervalu, Minneapolis, is saving 40 hours a week in labor by using a motorized cart to retrieve shopping carts scattered around its parking lot. The motorized cart attaches to the rear of a line of as many as 80 carts on dry pavement -- 40 on snow -- to push them to the front of the store. One person can both steer the line of carts from the front and use a remote control device to activate the motorized cart. ...

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