The bonus resources that you get at the start are designed to cover the situation you've mentioned above - starting without a particular resource. Hopefully you'll have enough to tide you over until you make a beeline for an OIL resource.
The cargoship is one of the freebies as well to provide you with a certain base amount of transport capacity. You only get it if your Capital is a port. You could decommission it if you wanted to go into 'fuel conservation mode'. The Fat Controller would understand.
Is it possible to use trains instead of trucks in the beans and bullets option?
No. Trains only run on train tracks. Armies don't fight exclusively on train tracks so I've opted for trucks to get supply to the troops. The trains do the job of shifting the supply to the HQ's (inbuilt into ATG - automatic function) and then the trucks take over to fan it out from the railheads.
The mod isn't designed to be hyper-realistic (important to keep it fun) but that's, from what I've read, pretty much what happened in WW2 with the movement of supply.
Also wanted the trade-off that your logistical tail of trucks burns a little bit of fuel. Bigger your army, the more fuel you are using just to keep it supplied (never becomes oppressive, just enough to be noticeable).
So the way it is designed is that trucks are for Bullets and Beans (supply) and Trains & Cargoships are for shifting Resources.
Cheers,
Lancer


