[lightbritefight]

Freight trains can be 3 miles long. Apprently the locks are hilariously weak, and they are generally staffed by 2 people. Responding to a break in can take 30 min - hour, and the train companies dont really care because they have insurance.

It's likely that the ID on the outside of the car is vague enough to imply that there may be high value goods like detergent or alcohol inside. Once the thieves break into a car, they would generally not have time to pick another.