This is probably one of my favorite things about owning a car, and why I have a sedan vs. a hatchback. Being able to store emergency supplies (couple cases of water, a backpack, ...), personal tech supplies (spare mbp charger, cable toolkit, etc.) in my car makes life much easier. Realistically this is 100-200 pounds of stuff, and I wouldn't want to have to carry it to/from a car myself every time I got a robot car.