Given that the author makes reference to the overall transport apparatus, the correctness of the length analogy also depends on if they refer to the "field of play" or the "entire field" or if the word "field" was edited from "pitch."
The rectangular field of play used for American football games measures 100 yards (91.44 m) long between the goal lines . . . . The entire field is a rectangle 360 feet (110 m) long. . . [0]
The pitch is rectangular in shape. . . . the longer sides are called the touchlines. . . . The two touchlines are between 100 and 130 yards (91 and 119 metres) long . . . [1]
Seems unclear to phrase it that way when talking a about the dimensions of the load and then comparing the entire transport apparatus length.
Unsure how they jump from 280 being greater than 360.