I noticed that too. I find it hard to believe the rear wheel is going to travel that much.Look at all of the space between the rear wheel and the parcel shelf in the "crash" drawing.
I wonder why they left that much room; can't be travel space for the rear wheel, the frame would bottom out before the wheel hit the shelf.
Looks like it can be lowered a few inches; hmmm new secret secure space to hide things in.
Or the drawing is not that accurate. (More than likely)