As noted in the article, "Quite simply, robots with legs can go a lot of places that wheels cannot. This will be the key to deliveries that can be made 24 hours a day, 365 days a year, by a fleet of autonomous vans that pull up to your curb, and an onboard robot that delivers to your doorstep." They can also deliver a bomb! Always a two-edged cutting instrument ...
All of this is coming very fast!