A work-in-progress robotic project called "Kiwi" has slowly taken over a lot of delivery over American college campuses. Though it'll be really useful if developed and with better tracking over the next generations, it's still funny to see small robots with automated voices and faces like the famous "Anki Vector" to be traveling all over to give students their delivered food. And soon a lot of places around the U.S. will have these robots if everything goes well and if it meets its terrain requirements. Some robots are already trained, yes, trained with AI to properly use their GPS to navigate hard-to-travel areas that have elevated ground, rough terrain, and even an automatic safety lock on the compartment to make sure it cannot be stolen by anyone.
https://www.nytimes.com/2019/11/07/business/kiwibot-delivery-bots-drones.html
