For one file, I decided to use trucks only to service the industries, while for the other, I decided to use trains and trucks. There are plenty of bottlenecks and inefficiencies, but I decided to share the game files for feedback and comments.
If you wish to give this map a go, here are the details:
Seed: 549279486
Map Size: 64x64
Terrain Type: Very Flat
Landscape: Sub-tropical
No. of Industries: Normal
No. of Towns: Low for 1 town, Normal for 2 Towns
No breakdowns

I will probably start a new game with the same parameters (except for towns), and give it a go one more time to see if I can improve.
-Marsman21