As for the cars references... Way back near the beginning of time (DIS time), there was a handful of posters on this board who debated the state of affairs of the Disney Company. A few of them referred to "carpools" of like minded individuals, travelling to WDW with a different perspective or take on the future of the company. It was disorganized conversation, at best.
Then, oh in early 2000 if I recall, an old, long since departed poster by the username "gcurling" came up with the idea of standardizing all carpool references.
He created definitions, which were later polished up by another poster of the past "JeffJewell" which were then offered up in survey form for members of this board to decide within which "car" they belonged.
If I correctly recall, car one members believed that the Disney Company (WDW more specifically) hadn't missed a step. It was pumping out the same level of quality and customer service as it always had and that business decisions were as solid as ever.
Car two recognized a modest decline, but was optimistic that a return was forthcoming.
Car three believed that the slide had reached a point of no return. They still cared about the company, and would continue to go to WDW, but knew that it would never be as great as it once was.
Car four had had enough. They were done for good.