Some experts are concerned this may not work in places with heavy or fast traffic but it's another new way in which companies are experimenting with employing robots that go that last mile in delivery.

一些专家担心，这可能不适用于交通繁忙或生活节奏快的地方，但这是公司正在试验的另一种新方式——用机器人完成送货的最后一英里。