How does the writer use spatial organization to describe the x-jt7

When things are discussed or described in a spacial manner, they are described in a particular order because it makes more sense to move descriptively by grouping things by a common element and discussing those first.  for instance, in the description of the x-jt7, by comparing the car to a rocket, the writer first describes the outside of the car and concludes by mentioning the inside (or "cockpit").  thus, the spacial organization the writer uses is from the outside to the inside.