Seen it in the request forum: a container with retractable legs and a modified Ampliroll to transport it.
The truck is a bit longer, removed the hook, added ties and a trailer hitch.
The container imports-commands from the truck: F1/F2 to retract/extend the legs, F3/F4 to lower/raise the container (makes legs shorter/longer)
There is also a 2nd load in the zip-file: a tank in a frame (sort of) Same commands as the trailer, but it can also be picked up by the Ampliroll. F5/F6 to retract/extend the hook