The intermodal cars were USA Trains ultimate series 1:29 scale ratio. The top intermodal car is USA Trains stock #R17110 which is the Santa Fe with 2 containers #1. The bottom intermodal car is a USA Trains stock #R17123 which is the BNSF with 2 containers #2. There were 4 versions of each road name made, the 1st stock number in each road name had no containers, then there were 3 intermodals in each road name with 2 containers listed as container set #1, #2 & #3