I was somewhat disappointed with the train contents as well. Was hoping for the stuff we keep running out of like chicken, meat, and the like.... I would imagine in time other boxcars can get added, and there is a button to speed up the trains that is for future usage..
As it is, all the stuff being carried can be made on one's farm if you load up on trees, and crops - and double up on some of the factories (ex. Paper mill, glass works, rubber, etc). I think I am up to 6 paper mills and no longer run out of paper rolls
On a side note, I have purchased them all and will keep it going to make some extra cash. Figure it costs me 3.5 million to fill them, and if all I do is sell the products for what they are worth (5.5 million) I make an extra 1.9 million coins every 7 days. Beats the interest rate on spare coins laying around. I am running my farms as a business - and avoid the pretty stuff. Needs to be functional and give me an ROI
Best bang is the Long Two Door Boxcar (profit of 252%), then Long OneDoor Boxcar (54%) and then Long container (42%).
Just another take....
Senior Cornwall