SE2 Self loading cargo car
Fully self-loading cargo car, designed for 2 containers, does not have its own power supply, a third-party generator is required for operation, trolleys are powered through a 500-meter winch, to connect, be sure to drive exactly under the green arrow. Electricity is transmitted through electrical connectors also on the platform there is an electrical cable anchor.

recomended locomotive with generator:
H3E Locomotive (waypoint auto-stop)
Runciter loco
JR Freight EF210 Electric Locomotive
if you have locomotive with good generator I can add link here
also you can use this tank to transport fluids:
Tank Container (ISO)