Shopping Free with the Google Assistant

Starting an examination of the user experience of hands free voice shopping at well known retailers.   The Google Home assistant has this capability using what they call Google Express.  I just received some instructions by mail for shopping at Target, Costco and Walmart.   Simply expressed, seems easy.   Here are their Voice Orders from Google Home instructions.  More impressions to follow.

More on this effort, from retailers perspective.
Example of its use with Target.