Thanks!
There will be an upkeep for pets/mounts that the player will have to deal with, and that will be more/less depending on where you left them (i.e. stabled or not), same goes for companions if they're mercs.
There may be some situations where a wagon belonging to you might still be seen in game after you've logged until they reach their destination, however this isn't definite yet.
You will have the ability to send goods via your carts/wagons to other locations, or send goods on a public caravan which is AI controlled.