Excellent synopsis, smoked. I would add that, in the particular case of the shipment of bitumen, rail has a couple of other checkmarks in the "pro" column. At ambient temps in a rail car, bitumen has the consistency of warm peanut butter - it tends not to flow too far, too fast if released. (As I'm sure you know, but others may not, it loads hot, and unloads only following steam tracing of the car(s)). When shipped by pipeline, bitumen must be diluted with condensates, at around 70% bitumen / 30% diluent. When released, this 'dilbit" will flow more or less like a medium crude. And you have the added transportation risk (and cost) of shipping more "stuff", and buying and shipping the diluent.