The capacity of your wood chip car would depend on that type of wood chips you plan to load in the wood chip car. Say if your wood chips for your wood chip car were large, your wood chip car would hold less wood chips, but if your wood chips were small then your wood chip car could hold more wood chips in your wood chip car. But say just for the hell of it if you loaded your wood chip car with saw dust in your wood chip car, your car could ship the max weight allowed in your wood chip car.

Yes I am bored