Retail giant Walmart has announced that it is launching its InHome Delivery service in the US in Q3, starting in Kansas City, Pittsburgh, and Vero Beach. The service will be available to over a million customers, and will allow Walmart employees to make deliveries inside the customers home – with the initial plan being to put food away inside the refrigerators and freezers. This service, if it takes hold, opens the door for all manner of other services, as it should get customers familiar with the concept and mechanics of using technology to let someone into their home if they are not present. There are other delivery trials involving cars, where the automaker has a relationship with the courier to…