Years ago I watched one of these cheap 3 wd toys lift a 100 ton locomotive from the GM plant in London Ontario to Dublin Ireland . I don't give a damn about who built it . It was impressive.
A C-5 I saw haul TWO M1A1 MBT's. That would be two times 130,900 pounds just in empty tanks. That means fuel, crew, and all the other "stuff" (technical term) in addition.
They have to have special permission to do this