Back in 04 we had the possibility of loading cars with boxes, oil and other commodities. Somewhat it works reasonably well using the interactive industries that came with the game as well as others made by third parties. Then we got "Lars". Somehow I missed this new system. I see it is not compatible, as cars loading Lars don't load trainz commodities and viceversa. Can anybody explain the differences and or where can we get information on all this? (Can it be compatible?. can wagons made for one system load the other system?).