Its similar to trading card grading if you’re familiar with that. You send it out to the company who inspects it, gives it a score and then seals it in a hard plastic container.
pmgnotes.com on a score of 35:
For years dealers and collectors called this grade “VF-XF.” This note looks Extremely Fine, but it will have four to seven light folds.
E: spelling
I think thats what they’re saying though, or at least thats what I got from their comment. There’s a safe speed for the distance between cars, and as the car behind you gets closer, that safe speed goes down quick.