Those information will be very crutial in modeling because CryEngine3 uses the metric scale and having the lenght and witdh of them will make it all easier. Here are some quick shots I've made of the ones I will be creating.
Main Cargo Car that has sliding doors. Will propably modify it so that only middle one open.
Coal Car. This one can be duplicated and its colour will be changed to achieve some variation
Additional one that will be left to model last.