A torque tube system is an automobile driveshaft technology, used in cars with a front engine and rear drive. It is not as widespread as the Hotchkiss drive, but is still occasionally used to this day.
The "torque" that is referred to in the name is not that of the driveshaft, along the axis of the car, but that applied by the wheels. The design problem that the torque tube solves is how to get the traction forces generated by the wheels to the car frame. The "torque tube" transmits this force by directly coupling the axle differential to the transmission and therefore propels the car forward by pushing on the engine/transmission and then through the engine mounts to the car frame.
Maybe it is misswritten or I require it dumbed down, or it is a Dunsel. We are talking about a 90 horsepower car with a 90 inch wheelbase. How much reverse torsional effect was coming from those bias-ply 13 inch tires? Why does a 475 horsepower Camaro not need this and it is bolted to my Red Sled?