I feel like a simpler solution would just be to store anything left in the boot when the car returns to the depot, and put it back in your next car. There could

I feel like a simpler solution would just be to store anything left in the boot when the car returns to the depot, and put it back in your next car. There could also be a safe for security and privacy. It's slightly less flexible, but for most cases it's much more efficient. I also think it's slightly less error prone, as there's no user input required, and since the stuff gets removed from the car, it's much less likely that anything will end up being sent to another user. At worst, they forget to put your stuff back automatically, and it's relatively easy for them to send another car, or even send your stuff to your house. Indeed, that might even be a service people are interested in if they're doing a lot of shopping, or they take public transport for part of their journey.