Trucks can be run like clipper ships, with three masts and a crew to handle the work aloft. The hold will account for the ballast. You could even recreate the golden triangle, with sex slaves and fentinol picked up at the Mexico border traded for cannabis, booze and meth in California, and you swap that for food in the heartland, which you then peddle in the East for high-tech electronics, which you then sell to Mexico so they can give them over to China, who can then reverse engineer and steal all the tech, while there picking up more sex slaves and fentinol.