That is assuming a class A. Per the FAQ they are outsourcing that to another company. So all of those rates are towing something with your vehicle and insurance.
So the breakdown of cost would be the total cost per mile for the tow vehicle. That would have to include fuel, maintinence, insurance and registration fees. Purchase can be tax deductable as a source of your income so that is not 100% meshed into the total cost per mile for you. So lets set your trucks cost per mile is around 40c a mile, when all is said and done on the return trip for the next trailer load you are only earning 50-65c a mile driven if your cost per mile is that low.
IF you take a 1000 mile delivery, you are looking at 3 days round trip and around 650 earned for a bigger trailer delivery in profits. And that does not include cost for motel/hotel or food. But using aorund 12 hours a day driving time, 3 days travel round trip resulting in making just over 18 an hour.