The HGV-1 could carry 8 cargo pallettes, with a Tarren Trade Authourity standard attachment on top. On this side it is carrying a standard container (with extra life-support fittings), a palette of black & yellow canisters, a palette of 4 "Blackbird" self-defence missles and a standard container at the rear.
About this creation
The crew compartment could be accessed by the fold-down front ramp or the hinged canopy on the cockpit.
The gantries from the crew compartment to the engine pod carried the 8 cargo palettes and also mounted a search radar and a twin laser cannon mount for use against pirates and space debris.
Being a freighter, the HGV-1 didn't have particularly impressive looking engines. The engine pod also powered VTOL lift thrusters under itself & the crew compartment, as well as the manoeuvring thrusters.
Here we see the HGV-1 on the ground on the barren and backward planet of Bala II. The HGV-1 could only land on planets with a thin atmosphere and low gravity. The crew compartment contained a bed and seat, along with some storage space. Occasionally the HGV-1 would operate on longer sectors with two crew or carry a paying passenger or hitch-hiker.
At the end of its working life, the HGV-1 worked in the backward systems of the western spiral arm of the galaxy. Here the spaceports were using modified vehicles from the "Classic Space" era of 30 years ago.
Aha! So that is why a container has life-support systems! The pilot is engaged in the very illegal but highly profitable trade in exoctic pet birds. The spaceport's CC-TV has spotted him selling a rare Danish Bley. He is one of the notorious Budgie Smugglers! Note also the "Blackbird" missiles for defending his expensive cargo from pirates AND the authorities.
The HGV-1 makes a run for it but the authourities have been alerted. Here we see the Budgie Smugglers being intercepted by a pair of Y-Fronts.