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Walmart expands online grocery delivery via Uber
The nation's largest retailer continues to beef up its defenses against Amazon. Walmart is expanding its online grocery delivery pilot via Uber to Orlando and Dallas. The pilot is currently ongoing in Phoenix and Tampa, Fla. (The chain also runs its own grocery delivery service in Denver and San Jose, California.) Walmart announced the expansion just days prior to a scheduled vote by Whole Foods Market's shareholders on its pending acquisition by Amazon.

