Walmart robots: Labor saver or employee eliminator?

Walmart invited reporters into one of its Bay Area stores to show of a new labor saving employee: an artificially intelligent robot. It's usually hard for broadcasters to get into a Walmart with cameras, but when the subject was robots, it was downright surprising. The initial question was: is this is just another "wow" technology, or a look at a more robotic, less human, workforce? Tom Vacar reports.

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