Robots will deliver pizza in New Zealand. An innovative idea but not sure how realistic it is. With rough terrain and some stairs that robot will not do much. Also, they could just use drones which are more versatile . I think this kind of tank robot will be more useful for delivering groceries to people nearby. For instance, it could be perfect to deliver foods and other necessities to the elderly who have trouble moving. This robots can also be used to pick up mail from different mail boxes and bring it to one central location where the postman can put it in his truck, instead of the postman driving his truck. This would save a lot of time and money, which most mail offices need right now (specially in the US). Also, this robot can be used in large offices or factories, where lot of materials and documents have to be moved around. Ahhh I look forward to a more efficient future.
I hear there are room service robots at hotels.