Sorry, I didn't understand your question right first time.
If I wanted to deliver products by Hauler from one Vehicle depot to another, I would use something like this (Green Zone - it is Departure Depot, where Hauler is filled up; Red Zone - it is Arrival Depot, where Hauler is emptied):
It seems ...

when it empties its inventory it just stays there and doesn't return to the pickup depot
In order to make a depot pick items from Hauler, you must set output signal at the "Vehicle Depot Exchange Data" (brown board at the top right corner with red & green wires) with the item signal of desired ...

What I could do is make some alternate tank ammo that is single target instead of direction-based with collision, so the only risk of collateral damage would the explosion radius of the explosive variant.

Hello and thanks for another great mod!
Is there any chance that AI turret behaviour for ...

Hello!
I have deleted a "RailTanker" mod. After that, every attempt to load game (where RailTanker mod was enabled) caused error in your mod control.lua line:74 However I have fixed that for myself, just wanted you to know about such possibility. Thanks.

Hello! First of all, Thanks for a great mod !
I have the same error as
The error code I'm getting is:
__EfficienSee__/control.lua:1352: attempt to compare number with nil

It is produced by opening EfficienSee screen ('N' hotkey) on the Angel's Refining building.
Here is screenshot
Also avaible ...